这连天看见有人法帖讨论如很用php生成条形码,所以就用了点时间学了学EAN_13标准.EAN_13标准是广泛使用的条码编码标准,主要运用在商品流通方面,比如我们看到的商品上的条码就是这种编码标准,还有图书上的编码标准也是这种编码标准. 下面的就是我的一段代码生成的是EAN_13标准的条码,需要php+gd 环境 代码: <? function EAN_13($code) { //一个单元的宽度 $lw = 2; //条码高 $hi = 100; // the guide code is no coding,is used to show the left part coding type// // Array guide is used to record the EAN_13 is left part coding type// $Guide = array(1=>'AAAAAA','AABABB','AABBAB','ABAABB','ABBAAB','ABBBAA','ABABAB','ABABBA','ABBABA'); $Lstart ='101'; $Lencode = array("A" => array('0001101','0011001','0010011','0111101','0100011','0110001','0101111','0111011','0110111','0001011'), "B" => array('0100111','0110011','0011011','0100001','0011101','0111001','0000101','0010001','0001001','0010111')); $Rencode = array('1110010','1100110','1101100','1000010','1011100', '1001110','1010000','1000100','1001000','1110100'); $center = '01010'; $ends = '101'; if ( strlen($code) != 13 ) { die("UPC-A Must be 13 digits."); } $lsum =0; $rsum =0; for($i=0;$i<(strlen($code)-1);$i++) { if($i % 2) { // $odd += $ncode[$x] $lsum +=(int)$code[$i]; }else{ $rsum +=(int)$code[$i]; } } $tsum = $lsum*3 + $rsum; if($code[12] != (10-($tsum % 10))) { die("the code is bad!"); } // echo $Guide[$code[0]]; $barcode = $Lstart; for($i=1;$i<=6;$i++) { $barcode .= $Lencode [$Guide[$code[0]][($i-1)]] [$code[$i]]; } $barcode .= $center; for($i=7;$i<13;$i++) { $barcode .= $Rencode[$code[($i)]] ; } $barcode .= $ends; $img = ImageCreate($lw*95+60,$hi+30); $fg = ImageColorAllocate($img, 0, 0, 0); $bg = ImageColorAllocate($img, 255, 255, 255); ImageFilledRectangle($img, 0, 0, $lw*95+60, $hi+30, $bg); $shift=10; for ($x=0;$x<strlen($barcode);$x++) { if (($x<4) || ($x>=45 && $x<50) || ($x >=92)) { $sh=10; } else { $sh=0; } if ($barcode[$x] == '1') { $color = $fg; } else { $color = $bg; } ImageFilledRectangle($img, ($x*$lw)+30,5,($x+1)*$lw+29,$hi+5+$sh,$color); } /* Add the Human Readable Label */ ImageString($img,5,20,$hi+5,$code[0],$fg); for ($x=0;$x<6;$x++) { ImageString($img,5,$lw*(8+$x*6)+30,$hi+5,$code[$x+1],$fg); ImageString($img,5,$lw*(53+$x*6)+30,$hi+5,$code[$x+7],$fg); } // ImageString($img,4,$lw*95+17,$hi-5,$code[12],$fg); /* Output the Header and Content. */ header("Content-Type: image/png"); ImagePNG($img); }
EAN_13('6901028055048');
?>
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