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barcode.php
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<?php
/*
* Author: David S. Tufts
* Company: Rocketwood.LLC
* www.rocketwood.com
* Date: 05/25/2003
* Usage:
* <img src="/barcode.php?text=testing" alt="testing" />
*/
// Get pararameters that are passed in through $_GET or set to the default value
$text = (isset($_GET["text"])?$_GET["text"]:"0");
$size = (isset($_GET["size"])?$_GET["size"]:"20");
$orientation = (isset($_GET["orientation"])?$_GET["orientation"]:"horizontal");
$code_type = (isset($_GET["codetype"])?$_GET["codetype"]:"code128");
$code_string = "";
// Translate the $text into barcode the correct $code_type
if ( in_array(strtolower($code_type), array("code128", "code128b")) ) {
$chksum = 104;
// Must not change order of array elements as the checksum depends on the array's key to validate final code
$code_array = array(" "=>"212222","!"=>"222122","\""=>"222221","#"=>"121223","$"=>"121322","%"=>"131222","&"=>"122213","'"=>"122312","("=>"132212",")"=>"221213","*"=>"221312","+"=>"231212",","=>"112232","-"=>"122132","."=>"122231","/"=>"113222","0"=>"123122","1"=>"123221","2"=>"223211","3"=>"221132","4"=>"221231","5"=>"213212","6"=>"223112","7"=>"312131","8"=>"311222","9"=>"321122",":"=>"321221",";"=>"312212","<"=>"322112","="=>"322211",">"=>"212123","?"=>"212321","@"=>"232121","A"=>"111323","B"=>"131123","C"=>"131321","D"=>"112313","E"=>"132113","F"=>"132311","G"=>"211313","H"=>"231113","I"=>"231311","J"=>"112133","K"=>"112331","L"=>"132131","M"=>"113123","N"=>"113321","O"=>"133121","P"=>"313121","Q"=>"211331","R"=>"231131","S"=>"213113","T"=>"213311","U"=>"213131","V"=>"311123","W"=>"311321","X"=>"331121","Y"=>"312113","Z"=>"312311","["=>"332111","\\"=>"314111","]"=>"221411","^"=>"431111","_"=>"111224","\`"=>"111422","a"=>"121124","b"=>"121421","c"=>"141122","d"=>"141221","e"=>"112214","f"=>"112412","g"=>"122114","h"=>"122411","i"=>"142112","j"=>"142211","k"=>"241211","l"=>"221114","m"=>"413111","n"=>"241112","o"=>"134111","p"=>"111242","q"=>"121142","r"=>"121241","s"=>"114212","t"=>"124112","u"=>"124211","v"=>"411212","w"=>"421112","x"=>"421211","y"=>"212141","z"=>"214121","{"=>"412121","|"=>"111143","}"=>"111341","~"=>"131141","DEL"=>"114113","FNC 3"=>"114311","FNC 2"=>"411113","SHIFT"=>"411311","CODE C"=>"113141","FNC 4"=>"114131","CODE A"=>"311141","FNC 1"=>"411131","Start A"=>"211412","Start B"=>"211214","Start C"=>"211232","Stop"=>"2331112");
$code_keys = array_keys($code_array);
$code_values = array_flip($code_keys);
for ( $X = 1; $X <= strlen($text); $X++ ) {
$activeKey = substr( $text, ($X-1), 1);
$code_string .= $code_array[$activeKey];
$chksum=($chksum + ($code_values[$activeKey] * $X));
}
$code_string .= $code_array[$code_keys[($chksum - (intval($chksum / 103) * 103))]];
$code_string = "211214" . $code_string . "2331112";
} elseif ( strtolower($code_type) == "code128a" ) {
$chksum = 103;
$text = strtoupper($text); // Code 128A doesn't support lower case
// Must not change order of array elements as the checksum depends on the array's key to validate final code
$code_array = array(" "=>"212222","!"=>"222122","\""=>"222221","#"=>"121223","$"=>"121322","%"=>"131222","&"=>"122213","'"=>"122312","("=>"132212",")"=>"221213","*"=>"221312","+"=>"231212",","=>"112232","-"=>"122132","."=>"122231","/"=>"113222","0"=>"123122","1"=>"123221","2"=>"223211","3"=>"221132","4"=>"221231","5"=>"213212","6"=>"223112","7"=>"312131","8"=>"311222","9"=>"321122",":"=>"321221",";"=>"312212","<"=>"322112","="=>"322211",">"=>"212123","?"=>"212321","@"=>"232121","A"=>"111323","B"=>"131123","C"=>"131321","D"=>"112313","E"=>"132113","F"=>"132311","G"=>"211313","H"=>"231113","I"=>"231311","J"=>"112133","K"=>"112331","L"=>"132131","M"=>"113123","N"=>"113321","O"=>"133121","P"=>"313121","Q"=>"211331","R"=>"231131","S"=>"213113","T"=>"213311","U"=>"213131","V"=>"311123","W"=>"311321","X"=>"331121","Y"=>"312113","Z"=>"312311","["=>"332111","\\"=>"314111","]"=>"221411","^"=>"431111","_"=>"111224","NUL"=>"111422","SOH"=>"121124","STX"=>"121421","ETX"=>"141122","EOT"=>"141221","ENQ"=>"112214","ACK"=>"112412","BEL"=>"122114","BS"=>"122411","HT"=>"142112","LF"=>"142211","VT"=>"241211","FF"=>"221114","CR"=>"413111","SO"=>"241112","SI"=>"134111","DLE"=>"111242","DC1"=>"121142","DC2"=>"121241","DC3"=>"114212","DC4"=>"124112","NAK"=>"124211","SYN"=>"411212","ETB"=>"421112","CAN"=>"421211","EM"=>"212141","SUB"=>"214121","ESC"=>"412121","FS"=>"111143","GS"=>"111341","RS"=>"131141","US"=>"114113","FNC 3"=>"114311","FNC 2"=>"411113","SHIFT"=>"411311","CODE C"=>"113141","CODE B"=>"114131","FNC 4"=>"311141","FNC 1"=>"411131","Start A"=>"211412","Start B"=>"211214","Start C"=>"211232","Stop"=>"2331112");
$code_keys = array_keys($code_array);
$code_values = array_flip($code_keys);
for ( $X = 1; $X <= strlen($text); $X++ ) {
$activeKey = substr( $text, ($X-1), 1);
$code_string .= $code_array[$activeKey];
$chksum=($chksum + ($code_values[$activeKey] * $X));
}
$code_string .= $code_array[$code_keys[($chksum - (intval($chksum / 103) * 103))]];
$code_string = "211412" . $code_string . "2331112";
} elseif ( strtolower($code_type) == "code39" ) {
$code_array = array("0"=>"111221211","1"=>"211211112","2"=>"112211112","3"=>"212211111","4"=>"111221112","5"=>"211221111","6"=>"112221111","7"=>"111211212","8"=>"211211211","9"=>"112211211","A"=>"211112112","B"=>"112112112","C"=>"212112111","D"=>"111122112","E"=>"211122111","F"=>"112122111","G"=>"111112212","H"=>"211112211","I"=>"112112211","J"=>"111122211","K"=>"211111122","L"=>"112111122","M"=>"212111121","N"=>"111121122","O"=>"211121121","P"=>"112121121","Q"=>"111111222","R"=>"211111221","S"=>"112111221","T"=>"111121221","U"=>"221111112","V"=>"122111112","W"=>"222111111","X"=>"121121112","Y"=>"221121111","Z"=>"122121111","-"=>"121111212","."=>"221111211"," "=>"122111211","$"=>"121212111","/"=>"121211121","+"=>"121112121","%"=>"111212121","*"=>"121121211");
// Convert to uppercase
$upper_text = strtoupper($text);
for ( $X = 1; $X<=strlen($upper_text); $X++ ) {
$code_string .= $code_array[substr( $upper_text, ($X-1), 1)] . "1";
}
$code_string = "1211212111" . $code_string . "121121211";
} elseif ( strtolower($code_type) == "code25" ) {
$code_array1 = array("1","2","3","4","5","6","7","8","9","0");
$code_array2 = array("3-1-1-1-3","1-3-1-1-3","3-3-1-1-1","1-1-3-1-3","3-1-3-1-1","1-3-3-1-1","1-1-1-3-3","3-1-1-3-1","1-3-1-3-1","1-1-3-3-1");
for ( $X = 1; $X <= strlen($text); $X++ ) {
for ( $Y = 0; $Y < count($code_array1); $Y++ ) {
if ( substr($text, ($X-1), 1) == $code_array1[$Y] )
$temp[$X] = $code_array2[$Y];
}
}
for ( $X=1; $X<=strlen($text); $X+=2 ) {
if ( isset($temp[$X]) && isset($temp[($X + 1)]) ) {
$temp1 = explode( "-", $temp[$X] );
$temp2 = explode( "-", $temp[($X + 1)] );
for ( $Y = 0; $Y < count($temp1); $Y++ )
$code_string .= $temp1[$Y] . $temp2[$Y];
}
}
$code_string = "1111" . $code_string . "311";
} elseif ( strtolower($code_type) == "codabar" ) {
$code_array1 = array("1","2","3","4","5","6","7","8","9","0","-","$",":","/",".","+","A","B","C","D");
$code_array2 = array("1111221","1112112","2211111","1121121","2111121","1211112","1211211","1221111","2112111","1111122","1112211","1122111","2111212","2121112","2121211","1121212","1122121","1212112","1112122","1112221");
// Convert to uppercase
$upper_text = strtoupper($text);
for ( $X = 1; $X<=strlen($upper_text); $X++ ) {
for ( $Y = 0; $Y<count($code_array1); $Y++ ) {
if ( substr($upper_text, ($X-1), 1) == $code_array1[$Y] )
$code_string .= $code_array2[$Y] . "1";
}
}
$code_string = "11221211" . $code_string . "1122121";
}
// Pad the edges of the barcode
$code_length = 20;
for ( $i=1; $i <= strlen($code_string); $i++ )
$code_length = $code_length + (integer)(substr($code_string,($i-1),1));
if ( strtolower($orientation) == "horizontal" ) {
$img_width = $code_length;
$img_height = $size;
} else {
$img_width = $size;
$img_height = $code_length;
}
$image = imagecreate($img_width, $img_height);
$black = imagecolorallocate ($image, 0, 0, 0);
$white = imagecolorallocate ($image, 255, 255, 255);
imagefill( $image, 0, 0, $white );
$location = 10;
for ( $position = 1 ; $position <= strlen($code_string); $position++ ) {
$cur_size = $location + ( substr($code_string, ($position-1), 1) );
if ( strtolower($orientation) == "horizontal" )
imagefilledrectangle( $image, $location, 0, $cur_size, $img_height, ($position % 2 == 0 ? $white : $black) );
else
imagefilledrectangle( $image, 0, $location, $img_width, $cur_size, ($position % 2 == 0 ? $white : $black) );
$location = $cur_size;
}
// Draw barcode to the screen
header ('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?>