Viewing file:  BarcodeI25.php (2.21 KB) -rw-r--r--
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<?php
class BarcodeI25 {
static private $encoding = array('NNWWN', 'WNNNW', 'NWNNW', 'WWNNN', 'NNWNW', 'WNWNN', 'NWWNN', 'NNNWW', 'WNNWN','NWNWN');
public static function bitStringTo2DArray( $digit ){
$d = array();
$len = strlen($digit);
for($i=0; $i<$len; $i++) $d[$i] = $digit[$i];
return(array($d));
}
public static function digitToGDRenderer($gd, $color, $xi, $yi, $angle, $mw, $mh, $digit){
$fn = function($points) use ($gd, $color) {
imagefilledpolygon($gd, $points, 4, $color);
};
return self::digitToRenderer($fn, $xi, $yi, $angle, $mw, $mh, $digit);
}
static public function compute($code, $crc, $type){
if (! $crc) {
if (strlen($code) % 2) $code = '0' . $code;
} else {
if ( ($type == 'int25') && (strlen($code) % 2 == 0) ) $code = '0' . $code;
$odd = true;
$sum = 0;
for($i=strlen($code)-1; $i>-1; $i--){
$v = intval($code[$i]);
$sum += $odd ? 3 * $v : $v;
$odd = ! $odd;
}
$code .= (string) ((10 - $sum % 10) % 10);
}
return($code);
}
static public function getDigit($code, $crc, $type){
$code = self::compute($code, $crc, $type);
if ($code == '') return($code);
$result = '';
if ($type == 'int25') { // Interleaved 2 of 5
// start
$result .= '1010';
// digits + CRC
$end = strlen($code) / 2;
for($i=0; $i<$end; $i++){
$c1 = $code[2*$i];
$c2 = $code[2*$i+1];
for($j=0; $j<5; $j++){
$result .= '1';
if (self::$encoding[$c1][$j] == 'W') $result .= '1';
$result .= '0';
if (self::$encoding[$c2][$j] == 'W') $result .= '0';
}
}
// stop
$result .= '1101';
} else if ($type == 'std25') {
// Standard 2 of 5 is a numeric-only barcode that has been in use a long time.
// Unlike Interleaved 2 of 5, all of the information is encoded in the bars; the spaces are fixed width and are used only to separate the bars.
// The code is self-checking and does not include a checksum.
// start
$result .= '11011010';
// digits + CRC
$end = strlen($code);
for($i=0; $i<$end; $i++){
$c = $code[$i];
for($j=0; $j<5; $j++){
$result .= '1';
if (self::$encoding[$c][$j] == 'W') $result .= '11';
$result .= '0';
}
}
// stop
$result .= '11010110';
}
return($result);
}
}
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