Barcodes-On-The-Fly-With-GD


            REQUIRED: GD compiled into PHP. 
Features: 
 o No fonts needed. This creates barcodes on the fly, drawing them 
 with gd. 
 o Amazingly fast and versatile. Specify the characters to convert 
 to barcode ON THE FLY! 
 o Cool backup feature-If for some reason the operator can't get the 
 barcode to scan, they hang their pointer over the barcode and the 
 'alt' feature displays the characters to enter in manually. 
NOTE1: IMPORTANT! THE PROGRAM THAT DISPLAYS THIS PAGE KEEPS PUTTING AN 
EXTRA " AFTER THE DOLLAR SIGN ON THE '"Z"=> "011010000", " "=> "011000100", 
"$"=> "010101000",' LINE. YOU *MUST* REMOVE THIS WHEN YOU COPY/PASTE THE 
CODE! 
NOTE2: having just one extra blank line in code2 will make it puke. Put NO 
blank lines at the beginning. 
-----------code1(i.e. index.phtml)--------------------------------- 
 function barcode($text) { 
 $enc_text = urlencode($text); 
 echo "Alt=\"$text\">"; 
 } 
?> 
 
 
 
 
 
-----code2(i.e. barcode.phtml)-just a few small mods to Stefan's code------ 
$text = implode($argv, " "); 
 $barcodeheight=40; 
 $barcodethinwidth=2; 
 $barcodethickwidth=$barcodethinwidth*3; 
 $codingmap = Array( "0"=> "000110100", "1"=> "100100001", 
 "2"=> "001100001", "3"=> "101100000", "4"=> "000110001", 
 "5"=> "100110000", "6"=> "001110000", "7"=> "000100101", 
 "8"=> "100100100", "9"=> "001100100", "A"=> "100001001", 
 "B"=> "001001001", "C"=> "101001000", "D"=> "000011001", 
 "E"=> "100011000", "F"=> "001011000", "G"=> "000001101", 
 "H"=> "100001100", "I"=> "001001100", "J"=> "000011100", 
 "K"=> "100000011", "L"=> "001000011", "M"=> "101000010", 
 "N"=> "000010011", "O"=> "100010010", "P"=> "001010010", 
 "Q"=> "000000111", "R"=> "100000110", "S"=> "001000110", 
 "T"=> "000010110", "U"=> "110000001", "V"=> "011000001", 
 "W"=> "111000000", "X"=> "010010001", "Y"=> "110010000", 
 "Z"=> "011010000", " "=> "011000100", "$"=> "010101000", 
 "%"=> "000101010", "*"=> "010010100", "+"=> "010001010", 
 "-"=> "010000101", "."=> "110000100", "/"=> "010100010"); 
 $text = strtoupper($text); 
 $text = "*$text*"; // add start/stop chars. 
 $textlen = strlen($text); 
 $barcodewidth = ($textlen)*(7*$barcodethinwidth 
 + 
3*$barcodethickwidth)-$barcodethinwidth; 
 $im = ImageCreate($barcodewidth,$barcodeheight); 
 $black = ImageColorAllocate($im,0,0,0); 
 $white = ImageColorAllocate($im,255,255,255); 
 imagefill($im,0,0,$white); 
 $xpos=0; 
 for ($idx=0;$idx<$textlen;$idx++) { 
 $char = substr($text,$idx,1); 
 // make unknown chars a '-'; 
 if (!isset($codingmap[$char])) $char = "-"; 
 for ($baridx=0;$baridx<=8;$baridx++) { 
 $elementwidth = (substr($codingmap[$char],$baridx,1)) ? 
 $barcodethickwidth 
: $barcodethinwidth; 
 if (($baridx+1)%2) imagefilledrectangle($im,$xpos,0,$xpos+ 
$elementwidth-1,$barcodeheight,$black); 
 $xpos+=$elementwidth; 
 } 
 $xpos+=$barcodethinwidth; 
 } 
 Header( "Content-type: image/gif"); 
 ImageGif($im); 
 ImageDestroy($im); 
 return; 
?>
Graphics Php
