Generate Barcodes With PHP
Generate Barcodes with PHP and GD
This class will generate many different barcode symbologies. This will take the pain out of generating barcodes on the fly or saving them to a file.
The class itself could be subclassed out into individual classes for each barcode symboloy like this..
<?php
class c128Barcode extends barcode{
// code for 128 Barcodes here
}
?>
I decided to keep it all in one class, so all my logic is in a single, easy to manage, file.
<?php
/*
* This class is for generating barcodes in diffrenct encoding symbologies.
* It supports EAN-13,EAN-8,UPC-A,UPC-E,ISBN ,2 of 5 Symbologies(std,ind,interleaved),postnet,
* codabar,code128,code39,code93 symbologies.
*
* Author Kevin Waterson <kevin@phpro.org>
*
* Requirements : PHP with GD library support.
*
* Reference : http://www.barcodeisland.com/symbolgy.phtml
*
* EXAMPLE
* $bar= new barcode();
* $barnumber="abcdef98765";
* $bar->_encode = 'CODE128';
* $bar->_color = '#ccc000';
* $bar->_bgcolor = '#FFFFFF';
* $bar->_height = 50;
* $bar->_font = '/usr/share/fonts/arial.ttf';
* $bar->_scale = 2;
* $bar->_format = 'gif';
* try
* {
* // if filename is omitted, the image is returned as a string
* // eg: $image_string = $bar->genBarCode( $barnumber, 'gif' );
* $bar->genBarCode( $barnumber, 'gif', 'my_barcode.gif');
* }
* catch( Exception $e )
* {
* echo $e->getMessage()."\n";
* echo $e->getLine()."\n";
* }
*/
class barcode
{
/**
*
* Settor
*
* @access public
* @param string $name
* @param mixed $value
*
*/
public function __set( $name, $value )
{
switch( $name )
{
case '_encode':
$this->_encode=strtoupper( $value );
break;
case '_color':
$this->_color = array(
hexdec( substr( $value, 1, 2 ) ),
hexdec( substr( $value, 3, 2 ) ),
hexdec( substr( $value, 5, 2 ) )
);
break;
case '_bgcolor':
$this->_bgcolor = array (
hexdec( substr( $value, 1, 2 ) ),
hexdec( substr( $value, 3, 2 ) ),
hexdec( substr( $value, 5, 2 ) )
);
break;
case '_width':
case '_height':
case '_scale':
case '_font':
case '_format':
case '_n2w':
case '_file':
$this->$name = $value;
break;
default: throw new Exception( "Unable to set $name" );
}
}
/**
*
* Settor
*
* @access public
* @param string $name
* @param mixed $value
*
*/
public function get( $name )
{
switch( $name )
{
case '_encode':
case '_width':
case '_height':
case '_scale':
case '_color':
case '_font':
case '_bgcolor':
case '_format':
case '_n2w':
return $this->$name;
break;
default: throw new Exception( "Unable to get $name" );
}
}
/**
*
* constructor, duh!
*
* @access public
*
*/
public function __construct( )
{
}
/**
*
* Set the font
*
* @access public
* @param string $font
*
*/
public function setFont( $font, $autolocate=false )
{
$this->_font=$font;
if($autolocate)
{
$this->_font = dirname( $_SERVER['PATH_TRANSLATED'] ). '/' .$font.'.ttf';
}
}
/**
*
* Set the narrow to wide format need by some codes
*
* @access public
* @param int $n2w
*
*/
public function setNarrow2Wide($n2w)
{
if( $n2w < 2 )
{
$n2w=3;
}
$this->_n2w = $n2w;
}
/**
*
* Generate the barcode from $barnumber
* Selects the appropreate encoding and relevant method
*
* @access public
* @param string $barnumber
* @param string $format
* @param string $file
*
*/
public function genBarCode( $barnumber, $format="gif", $file="" )
{
switch( $this->_encode )
{
case 'EAN-13':
if( strlen( $barnumber ) > 13 )
{
throw new Exception( 'Barcode number must be less then 13 characters' );
return false;
}
return $this->_eanBarcode( $barnumber, $this->_scale, $file);
break;
case 'UPC-A':
if(strlen($barnumber)>12)
{
throw new Exception( 'Barcode number must be less then 13 characters.' );
return false;
}
return $this->_eanBarcode( $barnumber, $this->_scale, $file);
break;
case 'ISBN':
if(strlen($barnumber)>13 || strlen($barnumber)<12)
{
throw new Exception( 'Barcode number must be less then 13 characters.' );
return false;
}
elseif(substr($barnumber,0,3)!="978")
{
throw new Exception( 'Not an ISBN barcode number. Must be start with 978' );
return false;
}
return $this->_eanBarcode( $barnumber, $this->_scale, $file );
break;
case 'EAN-8':
if( strlen( $barnumber ) > 8 )
{
throw new Exception( 'Barcode number must be less then 8 characters.' );
return false;
}
return $this->_ean8Barcode($barnumber,$this->_scale,$file);
break;
case 'UPC-E':
if(strlen($barnumber)>12)
{
throw new Exception( 'Barcode number must be less then 12 characters.' );
return false;
}
return $this->_upceBarcode($barnumber,$this->_scale,$file);
break;
case 'S205':
case 'I2O5':
//STANDARD 2 OF 5 SYMBOLOGY OR INDUSTRIAL 2 OF 5
return $this->_so25Barcode( $barnumber, $this->_scale, $file);
break;
case 'I25':
case 'INTERLEAVED':
//INTERLEAVED 2 OF 5
return $this->_i25Barcode( $barnumber, $this->_scale, $file );
break;
case 'POSTNET':
return $this->_postBarcode( $barnumber, $this->_scale, $file );
break;
case 'CODABAR':
return $this->_codaBarcode( $barnumber, $this->_scale, $file );
break;
case 'CODE128':
return $this->_c128Barcode( $barnumber, $this->_scale, $file );
break;
case 'CODE39':
return $this->_c39Barcode( $barnumber, $this->_scale, $file, false );
break;
case 'CODE93':
return $this->_c93Barcode( $barnumber, $this->_scale, $file );
break;
default:
throw new Exception( $this->_encode.' not supported!' );
}
}
/**
*
* Function for code93
*
* A Code 39 barcode has the following structure:
* A start character , represented below by the asterisk (*) character.
* Any number of characters encoded from the table below.
* The "C" and "K" checksum digits calculated as described above and encoded using the table below.
* A stop character, which is a second asterisk character.
*
* @access private
* @param string $barnumber
* @return string
*
*/
private function _c93Encode( $barnumber )
{
$encTable=array("0" => "100010100",
"1" => "101001000",
"2" => "101000100",
"3" => "101000010",
"4" => "100101000",
"5" => "100100100",
"6" => "100100010",
"7" => "101010000",
"8" => "100010010",
"9" => "100001010",
"A" => "110101000",
"B" => "110100100",
"C" => "110100010",
"D" => "110010100",
"E" => "110010010",
"F" => "110001010",
"G" => "101101000",
"H" => "101100100",
"I" => "101100010",
"J" => "100110100",
"K" => "100011010",
"L" => "101011000",
"M" => "101001100",
"N" => "101000110",
"O" => "100101100",
"P" => "100010110",
"Q" => "110110100",
"R" => "110110010",
"S" => "110101100",
"T" => "110100110",
"U" => "110010110",
"V" => "110011010",
"W" => "101101100",
"X" => "101100110",
"Y" => "100110110",
"Z" => "100111010",
"-" => "100101110",
"." => "111010100",
" " => "111010010",
"$" => "111001010",
"/" => "101101110",
"+" => "101110110",
"%" => "110101110",
"$" => "100100110",
"%" => "111011010",
"/" => "111010110",
"+" => "100110010",
"*" => "101011110"
);
$mfcStr="";
$widebar=str_pad("",$this->_n2w,"1",STR_PAD_LEFT);
$widespc=str_pad("",$this->_n2w,"0",STR_PAD_LEFT);
$arr_key=array_keys($encTable);
/// calculating C And K
for($j=0;$j<2;$j++)
{
$sum=0;
for($i=strlen($barnumber);$i>0;$i--)
{
$num=$barnumber[strlen($barnumber)-$i];
if(preg_match("/[A-Z]+/",$num))
$num=ord($num)-55;
elseif($num=='-')
$num=36;
elseif($num=='.')
$num=37;
elseif($num==' ')
$num=38;
elseif($num=='$')
$num=39;
elseif($num=='/')
$num=40;
elseif($num=='+')
$num=41;
elseif($num=='%')
$num=42;
elseif($num=='*')
$num=43;
$sum+=$i*$num;
}
$barnumber.=trim($arr_key[(int)($sum % 47)]);
}
$barnumber="*".$barnumber."*";
for($i=0;$i<strlen($barnumber);$i++)
{
$mfcStr.=$encTable[$barnumber[$i]];
}
$mfcStr.='1';
return $mfcStr;
}
/**
* 93 Barcodes
*
* @access private
* @param string $barnumber
* @param int $scale
* @param $string $file
* @param string $checkdigit
* @return string
*
*/
private function _c93Barcode( $barnumber, $scale=1, $file="", $checkdigit=false )
{
$bars=$this->_c93Encode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height+10*$scale;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars)+2*$scale*10;
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left']+$scale*10;
$height=floor($total_y-($scale*20));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=$bars[$i];
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
$font_arr=imagettfbbox ( $scale*10, 0, $this->_font, $barnumber);
$x= floor($total_x-(int)$font_arr[0]-(int)$font_arr[2]+$scale*10)/2;
imagettftext($im,$scale*10,0,$x, $height2, $bar_color,$this->_font , $barnumber);
return $this->write( $im, $file );
}
/**
* A Code 39 barcode has the following structure:
* A start character - the asterisk (*) character.
* Any number of characters encoded from the table below.
* An optional checksum digit calculated as described above and encoded from the table below.
* A stop character, which is a second asterisk character.
*
* @access private
* @param string $barnumber
* @param bool $checkdigit
* @return string
*
*/
public function _c39Encode($barnumber,$checkdigit=false)
{
$encTable=array("0" => "NNNWWNWNN",
"1" => "WNNWNNNNW",
"2" => "NNWWNNNNW",
"3" => "WNWWNNNNN",
"4" => "NNNWWNNNW",
"5" => "WNNWWNNNN",
"6" => "NNWWWNNNN",
"7" => "NNNWNNWNW",
"8" => "WNNWNNWNN",
"9" => "NNWWNNWNN",
"A" => "NNWWNNWNN",
"B" => "NNWNNWNNW",
"C" => "WNWNNWNNN",
"D" => "NNNNWWNNW",
"E" => "WNNNWWNNN",
"F" => "NNWNWWNNN",
"G" => "NNNNNWWNW",
"H" => "WNNNNWWNN",
"I" => "NNWNNWWNN",
"J" => "NNNNWWWNN",
"K" => "WNNNNNNWW",
"L" => "NNWNNNNWW",
"M" => "WNWNNNNWN",
"N" => "NNNNWNNWW",
"O" => "WNNNWNNWN",
"P" => "NNWNWNNWN",
"Q" => "NNNNNNWWW",
"R" => "WNNNNNWWN",
"S" => "NNWNNNWWN",
"T" => "NNNNWNWWN",
"U" => "WWNNNNNNW",
"V" => "NWWNNNNNW",
"W" => "WWWNNNNNN",
"X" => "NWNNWNNNW",
"Y" => "WWNNWNNNN",
"Z" => "NWWNWNNNN",
"-" => "NWNNNNWNW",
"." => "WWNNNNWNN",
" " => "NWWNNNWNN",
"$" => "NWNWNWNNN",
"/" => "NWNWNNNWN",
"+" => "NWNNNWNWN",
"%" => "NNNWNWNWN",
"*" => "NWNNWNWNN"
);
$mfcStr="";
$widebar=str_pad("",$this->_n2w,"1",STR_PAD_LEFT);
$widespc=str_pad("",$this->_n2w,"0",STR_PAD_LEFT);
if($checkdigit==true)
{
$arr_key=array_keys($encTable);
for($i=0;$i<strlen($barnumber);$i++)
{
$num=$barnumber[$i];
if(preg_match("/[A-Z]+/",$num))
$num=ord($num)-55;
elseif($num=='-')
$num=36;
elseif($num=='.')
$num=37;
elseif($num==' ')
$num=38;
elseif($num=='$')
$num=39;
elseif($num=='/')
$num=40;
elseif($num=='+')
$num=41;
elseif($num=='%')
$num=42;
elseif($num=='*')
$num=43;
$sum+=$num;
}
$barnumber.=trim($arr_key[(int)($sum % 43)]);
}
$barnumber="*".$barnumber."*";
for($i=0;$i<strlen($barnumber);$i++)
{
$tmp=$encTable[$barnumber[$i]];
$bar =true;
for($j=0;$j<strlen($tmp);$j++)
{
if($tmp[$j]=='N' && $bar)
$mfcStr.='1';
else if($tmp[$j]=='N' && !$bar)
$mfcStr.='0';
else if($tmp[$j]=='W' && $bar)
$mfcStr.=$widebar;
else if($tmp[$j]=='W' && !$bar)
$mfcStr.=$widespc;
$bar = !$bar;
}
$mfcStr.='0';
}
return $mfcStr;
}
/**
*
* 39Barcode
*
* @access private
* @param string $barnumber
* @param int $scale
* @param string $file
* @param bool $checkdigit
* @return string
*
*/
private function _c39Barcode($barnumber,$scale=1,$file="",$checkdigit=false)
{
$bars=$this->_c39Encode($barnumber,$checkdigit);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height+10*$scale;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars)+2*$scale*10;
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left']+$scale*10;
$height=floor($total_y-($scale*20));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=$bars[$i];
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
$font_arr=imagettfbbox ( $scale*10, 0, $this->_font, $barnumber);
$x= floor($total_x-(int)$font_arr[0]-(int)$font_arr[2]+$scale*10)/2;
imagettftext($im,$scale*10,0,$x, $height2, $bar_color,$this->_font , $barnumber);
return $this->write( $im, $file );
}
/**
*
* Start function for code128
*
* @access private
* @param string $barnumber
* @param string $useKeys
* @return string
*
*/
public function _c128Encode($barnumber,$useKeys)
{
$encTable=array("11011001100","11001101100","11001100110","10010011000","10010001100","10001001100","10011001000","10011000100","10001100100","11001001000","11001000100","11000100100","10110011100","10011011100","10011001110","10111001100","10011101100","10011100110","11001110010","11001011100","11001001110","11011100100","11001110100","11101101110","11101001100","11100101100","11100100110","11101100100","11100110100","11100110010","11011011000","11011000110","11000110110","10100011000","10001011000","10001000110","10110001000","10001101000","10001100010","11010001000","11000101000","11000100010","10110111000","10110001110","10001101110","10111011000","10111000110","10001110110","11101110110","11010001110","11000101110","11011101000","11011100010","11011101110","11101011000","11101000110","11100010110","11101101000","11101100010","11100011010","11101111010","11001000010","11110001010","10100110000","10100001100","10010110000","10010000110","10000101100","10000100110","10110010000","10110000100","10011010000","10011000010","10000110100","10000110010","11000010010","11001010000","11110111010","11000010100","10001111010","10100111100","10010111100","10010011110","10111100100","10011110100","10011110010","11110100100","11110010100","11110010010","11011011110","11011110110","11110110110","10101111000","10100011110","10001011110","10111101000","10111100010","11110101000","11110100010","10111011110","10111101110","11101011110","11110101110","11010000100","11010010000","11010011100","11000111010");
$start=array("A"=>"11010000100","B"=>"11010010000","C"=>"11010011100");
$stop="11000111010";
$sum=0;
$mfcStr="";
if($useKeys=='C')
{
for($i=0;$i<strlen($barnumber);$i+=2)
{
$val=substr($barnumber,$i,2);
if(is_int($val))
$sum+=($i+1)*(int)($val);
elseif($barnumber==chr(129))
$sum+=($i+1)*100;
elseif($barnumber==chr(130))
$sum+=($i+1)*101;
$mfcStr.=$encTable[$val];
}
}
else
{
for($i=0;$i<strlen($barnumber);$i++)
{
$num=ord($barnumber[$i]);
if($num>=32 && $num<=126)
$num=ord($barnumber[$i])-32;
elseif($num==128)
$num=99;
elseif($num==129)
$num=100;
elseif($num==130)
$num=101;
elseif($num<32 && $useKeys=='A')
$num=$num+64;
$sum+=($i+1)*$num;
$mfcStr.=$encTable[$num];
}
}
if($useKeys=='A')
$check=($sum+103)%103;
if($useKeys=='B')
$check=($sum+104)%103;
if($useKeys=='C')
$check=($sum+105)%103;
return $start[$useKeys].$mfcStr.$encTable[$check].$stop."11";
}
/**
*
* 128 Barcode
*
* @access public
* @param string $barnumber
* @param int $scale
* @param string $file The output filename
* @see _c128Encode()
*
*/
public function _c128Barcode( $barnumber, $scale=1, $file="" )
{
$useKeys="B";
if( preg_match( "/^[0-9".chr(128).chr(129).chr(130)."]+$/", $barnumber ) )
{
$useKeys='C';
if( strlen( $barnumber ) %2 != 0 )
{
$barnumber='0'.$barnumber;
}
}
for($i=0;$i<32;$i++)
{
$chr=chr($i);
}
if(preg_match("/[".$chr."]+/",$barnumber))
{
$useKeys='A';
}
$bars=$this->_c128Encode($barnumber,$useKeys);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height+10*$scale;
// if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars)+2*$scale*10;
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left']+$scale*10;
$height=floor($total_y-($scale*20));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
// imagecolorallocate ( resource $image , int $red , int $green , int $blue )
$bg_color = imagecolorallocate( $im, $this->_bgcolor[0], $this->_bgcolor[1], $this->_bgcolor[2] );
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate( $im, $this->_color[0], $this->_color[1], $this->_color[2] );
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper( $bars[$i] );
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
if( !function_exists( 'imagettfbbox' ) )
{
throw new exception( "FreeType extension must be installed\n" );
}
else
{
$font_arr = imagettfbbox ( $scale*10, 0, $this->_font, $barnumber);
}
$x= floor($total_x-(int)$font_arr[0]-(int)$font_arr[2]+$scale*10)/2;
imagettftext($im,$scale*10,0,$x, $height2, $bar_color,$this->_font , $barnumber);
return $this->write( $im, $file );
}
/**
* A Code 11 Barcode has the following structure:
* One of four possible start characters (A, B, C, or D), encoded from the table below.
* A narrow, inter-character space.
* The data of the message, encoded from the table below, with a narrow inter-character space between each character.
* One of four possible stop characters (A, B, C, or D), encoded from the table below
*
* @access private
* @para string $barnumber
* @return string
*/
private function _codaEncode($barnumber)
{
$encTable=array("0000011","0000110","0001001","1100000","0010010","1000010","0100001","0100100","0110000","1001000");
$chrTable=array("-" => "0001100","$" => "0011000",":" => "1000101","/" => "1010001","." => "1010100", "+" => "0011111","A" => "0011010","B" => "0001011","C" => "0101001","D" => "0001110");
$mfcStr="";
$widebar=str_pad("",$this->_n2w,"1",STR_PAD_LEFT);
$widespc=str_pad("",$this->_n2w,"0",STR_PAD_LEFT);
for($i=0;$i<strlen($barnumber);$i++)
{
if(preg_match("/[0-9]+/",$barnumber[$i]))
$tmp=$encTable[(int)$barnumber[$i]];
else
$tmp=$chrTable[strtoupper(trim($barnumber[$i]))];
$bar =true;
for($j=0;$j<strlen($tmp);$j++)
{
if($tmp[$j]=='0' && $bar)
$mfcStr.='1';
else if($tmp[$j]=='0' && !$bar)
$mfcStr.='0';
else if($tmp[$j]=='1' && $bar)
$mfcStr.=$widebar;
else if($tmp[$j]=='1' && !$bar)
$mfcStr.=$widespc;
$bar = !$bar;
}
$mfcStr.='0';
}
return $mfcStr;
}
/**
*
* Coda Barcode
*
* @access private
* @param string $barnumber
* @param int $scale
* @param string $file
* @return string
*
*/
public function _codaBarcode($barnumber,$scale=1,$file="")
{
$bars=$this->_codaEncode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars);
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left'];
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper($bars[$i]);
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
$x= ($total_x-strlen($bars))/2;
imagettftext($im,$scale*6,0,$x, $height2, $bar_color,$this->_font , $barnumber);
return $this->write( $im, $file );
}
/**
*
* A PostNet barcode has the following structure:
* Frame bar, encoded as a single 1.
* 5, 9, or 11 data characters properly encoded (see encoding table below).
* Check digit, encoded using encoding table below.
* Final frame bar, encoded as a single 1.
* 0 11000
* 1 00011
* 2 00101
* 3 00110
* 4 01001
* 5 01010
* 6 01100
* 7 10001
* 8 10010
* 9 10100
*
* @access private
* @param string $barnumber
* @return string
*
*/
private function _postEncode( $barnumber )
{
$encTable=array("11000","00011","00101","00110","01001","01010","01100","10001","10010","10100");
$sum=0;
$encstr="";
for($i=0;$i<strlen($barnumber);$i++)
{
$sum+=(int)$barnumber[$i];
$encstr.=$encTable[(int)$barnumber[$i]];
}
if($sum%10!=0)
$check=(int)(10-($sum%10));
$encstr.=$encTable[$check];
$encstr="1".$encstr."1";
return $encstr;
}
public function _postBarcode($barnumber,$scale=1,$file="")
{
if(strlen($barnumber)==5 || strlen($barnumber)==9 || strlen($barnumber)==11)
;
else
{
throw new Exception( "Not a valid postnet number." );
return false;
}
$bars=$this->_postEncode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars)*2;
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left'];
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$val=strtoupper($bars[$i]);
$h=$total_y-$space['bottom'];
if($val==1)
imagefilledrectangle($im,$xpos,$space['top'],$xpos+$scale-1,$height2 , $bar_color);
else
imagefilledrectangle($im,$xpos,floor($height2/1.5) ,$xpos+$scale-1, $height2,$bar_color);
$xpos+=2*$scale;
}
return $this->write( $im, $file );
}
/**
*
* A Standard 2 of 5 barcode has the following physical structure:
* Start character, encoded as 11011010.
* Data characters properly encoded (see encoding table below).
* Stop character, encoded as 11010110.
*
* ASCII BARCODE
* 0 NNWWN
* 1 WNNNW
* 2 NWNNW
* 3 WWNNN
* 4 NNWNW
* 5 WNWNN
* 6 NWWNN
* 7 NNNWW
* 8 WNNWN
* 9 NWNWN
*
* @access private
* @param string $barnumber
* @return string
*
*/
private function _i25Encode( $barnumber )
{
$encTable=array("NNWWN","WNNNW","NWNNW","WWNNN","NNWNW","WNWNN","NWWNN","NNNWW","WNNWN","NWNWN");
$guards=array("1010","1101");
$len=strlen($barnumber);
if($len % 2!=0)
{
$barnumber=$this->_checkDigit($barnumber,$len);
if($len==strlen($barnumber) && substr($barnumber,-1)!='0')
$barnumber.='0';
}
$mfcStr="";
$widebar=str_pad("",$this->_n2w,"1",STR_PAD_LEFT);
$widespc=str_pad("",$this->_n2w,"0",STR_PAD_LEFT);
for($i=0;$i<strlen($barnumber);$i+=2)
{
$tmp=$encTable[(int)$barnumber[$i]];
$tmp1=$encTable[(int)$barnumber[$i+1]];
for($j=0;$j<strlen($tmp);$j++)
{
if($tmp[$j]=='N')
$mfcStr.='1';
else
$mfcStr.=$widebar;
if($tmp1[$j]=='N')
$mfcStr.='0';
else
$mfcStr.=$widespc;
}
}
return $guards[0].$mfcStr.$guards[1];
}
/**
*
* i25 Barcodes
*
* @access private
* @param string $barnumber
* @param int $scale
* @param string $file
* @return string
*
*/
private function _i25Barcode( $barnumber, $scale=1, $file="" )
{
$bars=$this->_i25Encode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars);
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left'];
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper($bars[$i]);
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
$x= ($total_x-strlen($bars))/2;
imagettftext($im,$scale*6,0,$x, $height2, $bar_color,$this->_font , $barnumber);
return $this->write( $im, $file );
}
/**
*
* Function for S2O5
* A Standard 2 of 5 barcode has the following physical structure:
* Start character, encoded as 11011010.
* Data characters properly encoded (see encoding table below).
* Stop character, encoded as 11010110.
*
* ASCII BARCODE
* 0 NNWWN
* 1 WNNNW
* 2 NWNNW
* 3 WWNNN
* 4 NNWNW
* 5 WNWNN
* 6 NWWNN
* 7 NNNWW
* 8 WNNWN
* 9 NWNWN
*
* @access private
* @param string $barnumber
* @return string
*
*/
public function _so25Encode($barnumber)
{
$encTable=array("NNWWN","WNNNW","NWNNW","WWNNN","NNWNW","WNWNN","NWWNN","NNNWW","WNNWN","NWNWN");
$guards=array("11011010","1101011");
$len=strlen($barnumber);
$barnumber=$this->_checkDigit($barnumber,$len);
if($len==strlen($barnumber) && substr($barnumber,-1)!='0')
$barnumber.='0';
$mfcStr="";
$widebar=str_pad("",$this->_n2w,"1",STR_PAD_LEFT);
$widebar.="0";
for($i=0;$i<strlen($barnumber);$i++)
{
$num=(int)$barnumber{$i};
$str="";
$str=str_replace("N","10",$encTable[$num]);
$str=str_replace("W",$widebar,$str);
$mfcStr.=$str;
}
return $guards[0].$mfcStr.$guards[1];
}
/**
*
* so25 Barcodes
*
* @access private
* @param string $barnumber
* @param int $scale
* @param string $file
* @return string
*
*/
private function _so25Barcode($barnumber,$scale=1,$file="")
{
$bars=$this->_so25Encode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars);
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left'];
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper($bars[$i]);
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
$x= ($total_x-strlen($bars))/2;
imagettftext($im,$scale*6,0,$x, $height2, $bar_color,$this->_font , $barnumber);
return $this->write( $im, $file );
}
/**
*
* Functions to conver UCPA to UPCE Encoding
*
* @access private
* @param string $upca
* @return string
* @see _upceEncode()
*
*/
private function ConvertUPCAtoUPCE( $upca )
{
$csumTotal = 0; // The checksum working variable starts at zero
$upce ="";
// If the source message string is less than 12 characters long, we make it 12 characters
if( strlen($upca) < 12 )
{
$barnumber = str_pad($barnumber, 12, "0", STR_PAD_LEFT);
}
if( substr($upca,0,1) != '0' && substr($upca,0,1) != '1')
{
throw new Exception( 'Invalid Number System (only 0 & 1 are valid)' );
return false;
}
else
{
if( substr($upca,3,3) == '000' || substr($upca,3,3) == '100' || substr($upca,3,3) == '200' )
$upce = substr($upca,1,2) . substr($upca,8,3) . substr($upca,3,1);
else if( substr($upca,4,2) == '00' )
$upce = substr($upca,1,2) . substr($upca,9,2) . '3';
else if( substr($upca,5,1) == '0' )
$upce = substr($upca,1,4) . substr($upca,10,1) . '4';
else if( substr($upca,10,1) >= '5' )
$upce = substr($upca,1,5) . substr($upca,10,1);
else
{
throw new Exception( 'Invalid product code (00005 to 00009 are valid)' );
return false;
}
}
return $upce;
}
/**
*
* Encode UPCE
*
* @access private
* @param string $barnumber
* @param int encbit
* @param string $checkdigit
* @return string
*
*/
private function _upceEncode( $barnumber, $encbit, $checkdigit)
{
$leftOdd=array("0001101","0011001","0010011","0111101","0100011","0110001","0101111","0111011","0110111","0001011");
$leftEven=array("0100111","0110011","0011011","0100001","0011101","0111001","0000101","0010001","0001001","0010111");
$encTable0=array("EEEOOO","EEOEOO","EEOOEO","EEOOOE","EOEEOO","EOOEEO","EOOOEE","EOEOEO","EOEOOE","EOOEOE");
$encTable1=array("OOOEEE","OOEOEE","OOEEOE","OOEEEO","OEOOEE","OEEOOE","OEEEOO","OEOEOE","OEOEEO","OEEOEO");
$guards=array("bab","ababa","b");
if($encbit==0)
$encTable=$encTable0;
elseif($encbit==1)
$encTable=$encTable1;
else
{
throw new Exception( "Not an UPC-E barcode number" );
return false;
}
$mfcStr="";
$prodStr="";
$checkdigit;
$encTable[$checkdigit];
for($i=0;$i<strlen($barnumber);$i++)
{
$num=(int)$barnumber{$i};
$even=(substr($encTable[$checkdigit],$i,1)=='E');
if(!$even)
$mfcStr.=$leftOdd[$num];
else
$mfcStr.=$leftEven[$num];
}
return $guards[0].$mfcStr.$guards[1].$guards[2];
}
/**
*
* UPCE barcodes
*
* @access private
* @param string $barnumber
* @param int $scale
* @param string $vile
* @return string
*
*/
public function _upceBarcode($barnumber,$scale=1,$file="")
{
if(strlen($barnumber)>6)
{
$this->_ean13CheckDigit($barnumber);
$barnumber=substr($this->_ean13CheckDigit($barnumber),1);
$encbit=$barnumber[0];
$checkdigit=$barnumber[11];
$barnumber=$this->ConvertUPCAtoUPCE($barnumber);
}
else
{
$barnumber=$this->_checkDigit($barnumber,7);
$encbit=$barnumber[0];
$checkdigit=$barnumber[7];
$barnumber=substr($barnumber,1,6);
}
$bars=$this->_upceEncode($barnumber,$encbit,$checkdigit);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars)+$scale*12;
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left']+($scale*6);
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper($bars[$i]);
if(preg_match("/[a-z]/i",$val))
{
$val=ord($val)-65;
$h=$height2;
}
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
imagettftext($im,$scale*6,0, $space['left'], $height, $bar_color,$this->_font , $encbit);
$x= $space['left']+$scale*strlen($barnumber)+$scale*6;
imagettftext($im,$scale*6,0,$x, $height2, $bar_color,$this->_font , $barnumber);
$x=$total_x-$space['left']-$scale*6;
imagettftext($im,$scale*6,0, $x, $height, $bar_color,$this->_font , $checkdigit);
return $this->write( $im, $file );
}
/**
*
* Function for EAN-8 Encoding
*
* @access private
* @param string $barnumber
* @param int $number
* @return int
*
*/
private function _checkDigit($barnumber,$number)
{
$csumTotal = 0; // The checksum working variable starts at zero
// If the source message string is less than 12 characters long, we make it 12 characters
if(strlen($barnumber) < $number)
{
$barnumber = str_pad( $barnumber, $number, "0", STR_PAD_LEFT );
}
// Calculate the checksum value for the message
for($i=0;$i<strlen($barnumber);$i++)
{
if($i % 2 == 0 )
{
$csumTotal = $csumTotal + (3 * intval($barnumber{$i}));
}
else
{
$csumTotal = $csumTotal + intval($barnumber{$i});
}
}
// Calculate the checksum digit
//echo $csumTotal;
if( $csumTotal % 10 == 0 )
{
$checksumDigit = '';
}
else
{
$checksumDigit = 10 - ($csumTotal % 10);
}
return $barnumber.$checksumDigit;
}
/**
*
* An EAN-8 barcode has the following physical structure:
* Left-hand guard bars, or start sentinel, encoded as 101.
* Two number system characters, encoded as left-hand odd-parity characters.
* First two message characters, encoded as left-hand odd-parity characters.
* Center guard bars, encoded as 01010.
* Last three message characters, encoded as right-hand characters.
* Check digit, encoded as right-hand character.
* Right-hand guar bars, or end sentinel, encoded as 101.
*
* @access private
* @param string $barnumber
* @return string
*
*/
private function _ean8Encode( $barnumber )
{
$leftOdd=array("0001101","0011001","0010011","0111101","0100011","0110001","0101111","0111011","0110111","0001011");
$leftEven=array("0100111","0110011","0011011","0100001","0011101","0111001","0000101","0010001","0001001","0010111");
$rightAll=array("1110010","1100110","1101100","1000010","1011100","1001110","1010000","1000100","1001000","1110100");
$encTable=array("000000","001011","001101","001110","010011","011001","011100","010101","010110","011010");
$guards=array("bab","ababa","bab");
$mfcStr="";
$prodStr="";
for($i=0;$i<strlen($barnumber);$i++)
{
$num=(int)$barnumber{$i};
if($i<4)
{
$mfcStr.=$leftOdd[$num];
}
elseif($i>=4)
{
$prodStr.=$rightAll[$num];
}
}
return $guards[0].$mfcStr.$guards[1].$prodStr.$guards[2];
}
/**
*
* EAN8 Barcodes
*
* @param string $barnumber
* @param int $scale
* @param string $file
* @return string
*
*/
public function _ean8Barcode($barnumber,$scale=1,$file="")
{
$barnumber=$this->_checkDigit($barnumber,7);
$bars=$this->_ean8Encode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*strlen($bars);
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left'];
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper($bars[$i]);
if(preg_match("/[a-z]/i",$val))
{
$val=ord($val)-65;
$h=$height2;
}
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
$str=substr($barnumber,0,4);
$x= $space['left']+$scale*strlen($barnumber);
imagettftext($im,$scale*6,0,$x, $height2, $bar_color,$this->_font , $str);
$str=substr($barnumber,4,4);
$x=$space['left']+$scale*strlen($bars)/1.65;
imagettftext($im,$scale*6,0, $x, $height2, $bar_color,$this->_font ,$str);
return $this->write( $im, $file );
}
/**
*
* Functions for EAN-13 Encoding
*
* @access private
* @param string $barnumber
* @return string
*
*/
private function _ean13CheckDigit( $barnumber )
{
$csumTotal = 0; // The checksum working variable starts at zero
// If the source message string is less than 12 characters long, we make it 12 characters
if(strlen($barnumber) <= 12 )
{
$barnumber = str_pad($barnumber, 13, "0", STR_PAD_LEFT);
}
/*if(strlen($barnumber) == 13)
$barnumber = substr($barnumber,0,12);*/
// Calculate the checksum value for the message
for($i=0;$i<strlen($barnumber);$i++)
{
if($i % 2 == 0 )
{
$csumTotal = $csumTotal + intval($barnumber{$i});
}
else
{
$csumTotal = $csumTotal + (3 * intval($barnumber{$i}));
}
}
// Calculate the checksum digit
if( $csumTotal % 10 == 0 )
{
$checksumDigit = '';
}
else
{
$checksumDigit = 10 - ($csumTotal % 10);
}
return $barnumber.$checksumDigit;
}
/**
*
* An EAN-13 barcode has the following physical structure:
* Left-hand guard bars, or start sentinel, encoded as 101.
* The second character of the number system code, encoded as described below.
* The five characters of the manufacturer code, encoded as described below.
* Center guard pattern, encoded as 01010.
* The five characters of the product code, encoded as right-hand characters, described below.
* Check digit, encoded as a right-hand character, described below.
* Right-hand guard bars, or end sentinel, encoded as 101.
* FIRST NUMBER
*
* SYSTEM DIGIT PARITY TO ENCODE WITH
* SECOND NUMBER
* SYSTEM DIGIT MANUFACTURER CODE CHARACTERS
* 1 2 3 4 5
* 0 (UPC-A) Odd Odd Odd Odd Odd Odd
* 1 Odd Odd Even Odd Even Even
* 2 Odd Odd Even Even Odd Even
* 3 Odd Odd Even Even Even Odd
* 4 Odd Even Odd Odd Even Even
* 5 Odd Even Even Odd Odd Even
* 6 Odd Even Even Even Odd Odd
* 7 Odd Even Odd Even Odd Even
* 8 Odd Even Odd Even Even Odd
* 9 Odd Even Even Odd Even Odd
*
* @access private
* @param string $barnumber
* @return string
*
*/
private function _eanEncode( $barnumber )
{
$leftOdd=array("0001101","0011001","0010011","0111101","0100011","0110001","0101111","0111011","0110111","0001011");
$leftEven=array("0100111","0110011","0011011","0100001","0011101","0111001","0000101","0010001","0001001","0010111");
$rightAll=array("1110010","1100110","1101100","1000010","1011100","1001110","1010000","1000100","1001000","1110100");
$encTable=array("000000","001011","001101","001110","010011","011001","011100","010101","010110","011010");
$guards=array("bab","ababa","bab");
$mfcStr="";
$prodStr="";
$encbit=$barnumber[0];
for($i=1;$i<strlen($barnumber);$i++)
{
$num=(int)$barnumber{$i};
if($i<7)
{
$even=(substr($encTable[$encbit],$i-1,1)==1);
if(!$even)
$mfcStr.=$leftOdd[$num];
else
$mfcStr.=$leftEven[$num];
}
elseif($i>=7)
{
$prodStr.=$rightAll[$num];
}
}
return $guards[0].$mfcStr.$guards[1].$prodStr.$guards[2];
}
/**
*
* EAN Barcodes
*
* @access private
* @param string $barnumber
* @param int $scale
* @param string $file
* @return string
*
*/
public function _eanBarcode($barnumber,$scale=1,$file="")
{
$barnumber=$this->_ean13CheckDigit($barnumber);
$bars=$this->_eanEncode($barnumber);
if ($scale<1) $scale=2;
$total_y=(double)$scale * $this->_height;
if (!$space)
$space=array('top'=>2*$scale,'bottom'=>2*$scale,'left'=>2*$scale,'right'=>2*$scale);
/* count total width */
$xpos=0;
$xpos=$scale*(114);
/* allocate the image */
$total_x= $xpos +$space['left']+$space['right'];
$xpos=$space['left']+($scale*6);
$height=floor($total_y-($scale*10));
$height2=floor($total_y-$space['bottom']);
$im=imagecreatetruecolor($total_x, $total_y);
$bg_color = imagecolorallocate($im, $this->_bgcolor[0], $this->_bgcolor[1],$this->_bgcolor[2]);
imagefilledrectangle($im,0,0,$total_x,$total_y,$bg_color);
$bar_color = imagecolorallocate($im, $this->_color[0], $this->_color[1],$this->_color[2]);
for($i=0;$i<strlen($bars);$i++)
{
$h=$height;
$val=strtoupper($bars[$i]);
if(preg_match("/[a-z]/i",$val))
{
$val=ord($val)-65;
$h=$height2;
}
if($this->_encode=="UPC-A" && ($i<10 || $i>strlen($bars)-13))
$h=$height2;
if($val==1)
imagefilledrectangle($im,$xpos, $space['top'],$xpos+$scale-1, $h,$bar_color);
$xpos+=$scale;
}
if($this->_encode=="UPC-A")
$str=substr($barnumber,1,1);
else
$str=substr($barnumber,0,1);
imagettftext($im,$scale*6,0, $space['left'], $height, $bar_color,$this->_font , $str);
if($this->_encode=="UPC-A")
$str=substr($barnumber,2,5);
else
$str=substr($barnumber,1,6);
$x= $space['left']+$scale*strlen($barnumber)+$scale*6;
imagettftext($im,$scale*6,0,$x, $height2, $bar_color,$this->_font , $str);
if($this->_encode=="UPC-A")
$str=substr($barnumber,7,5);
else
$str=substr($barnumber,7,6);
$x=$space['left']+$scale*strlen($bars)/1.65+$scale*6;
imagettftext($im,$scale*6,0, $x, $height2, $bar_color,$this->_font ,$str);
if($this->_encode=="UPC-A")
{
$str=substr($barnumber,12,1);
$x=$total_x-$space['left']-$scale*6;
imagettftext($im,$scale*6,0, $x, $height, $bar_color,$this->_font , $str);
}
return $this->write( $im, $file );
}
/**
*
* Write image to file
*
* @access private
* @param resource $im
* @param string $file
* @return bool or string if $file is empty
*
*/
private function write( $im, $file )
{
if( empty( $file ) )
{
return $this->getImageAsString( $im );
}
else
{
switch( $this->_format )
{
case 'jpg':
case 'jpeg':
return imagejpeg( $im, $file );
break;
case 'png':
return imagepng( $im, $file );
break;
case 'gif':
return imagegif( $im, $file );
break;
default: throw new Exception( "Image type ($image_type) not supported" );
}
imagedestroy( $im );
}
}
/**
*
* Get image as a string
*
* @access public
* @param resource $im
* return string
*
*/
public function getImageAsString( $im )
{
ob_start();
switch( $this->_format )
{
case 'jpg':
case 'jpeg':
imagejpeg( $im );
break;
case 'png':
imagepng( $im );
break;
case 'gif':
imagegif( $im );
break;
default: throw new Exception( "Image type ($image_type) not supported" );
}
$image = ob_get_clean();
imagedestroy( $im );
return $image;
}
} // end of class
?>