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透过 PHP 生成 一维码

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Release: 2016-06-13 13:25:14
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通过 PHP 生成 一维码
此代码来自  http://www.nixiaofeng.com/110.html

<?php
$code = $_GET['code'];
if ($code != "") {
    if (!is_numeric($code)) die('输入的不是数字');
    if (strlen($code) < 12 || strlen($code) > 13) die('条码长度不正确');
    if (strlen($code) == 12) {
        // 计算校验位
        $lsum = 0;
        $rsum = 0;
        for($i=1; $i<=strlen($code); $i++) {
            if($i % 2) {
                $lsum += (int)$code[$i-1];
            }else{
                $rsum += (int)$code[$i-1];
            }
        }
        $tsum = $lsum + $rsum * 3;
        $chkdig = 10 - ($tsum % 10);
        if ($chkdig == 10) $chkdig = 0;
        $code .= $chkdig;
    }

    // 定义起始付
    $start = '101';
    // 定义中止符
    $end = '101';
    // 定义中间分隔符
    $center = '01010';
    // 定义左资料码
    $Guide = array(0=>'AAAAAA','AABABB','AABBAB','AABBBA','ABAABB','ABBAAB','ABBBAA','ABABAB','ABABBA','ABBABA');

    // 定义左侧码,分为“A”、“B”两种
    $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'));
    // 定义右侧码,统一为“C”编码
    $Rencode = array('1110010','1100110','1101100','1000010','1011100','1001110','1010000','1000100','1001000','1110100');


     
    // 编码起始符
    $barcode = $start;

    // 编码左资料位
    for($i=1; $i<=6; $i++) {
        $barcode .= $Lencode[$Guide[$code[0]][($i-1)]][$code[$i]];
    }
     
    // 编码中间分隔符
    $barcode .= $center;
     
    // 编码右资料位
    for($i=7; $i<13; $i++) {
        $barcode .= $Rencode[$code[($i)]];
    }
     
    // 编码中止符
    $barcode .= $end;

    // 定义每个条码单元的宽度和高度,单位是像素
    $width = 2;
    $height = 40;
     
    // 定义起始符、中止符、中间分隔符的高度增量
    $increment = 10;
     
    // 创建方形(×95是因为整个条码共95个单元,+60和+30是给条码图片周围留空白边框)
    $img = ImageCreate($width*95+60,$height+30);  // 目前这个方形是透明的
     
    // “1”的颜色(黑)与“0”的颜色(白)
    $fg = ImageColorAllocate($img, 0, 0, 0);
    $bg = ImageColorAllocate($img, 255, 255, 255);
     
    // 以“0”的颜色(白色),填充整个方形
    ImageFilledRectangle($img, 0, 0, $width*95+60, $height+30, $bg);
     
    // 循环编码后的每一个单元,输出条码图形
    for ($x=0; $x<strlen($barcode); $x++) {
        // ($x<4) 为起始符,($x>=92)为中止符,($x>=45 && $x<50)为中间分隔符
        // 这3个需要将高度增加
        if (($x<4) || ($x>=45 && $x<50) || ($x>=92)) {
            $increment = 10;
        } else {
            $increment = 0;
        }
        // 当编码值为“1”时,输出黑色;当编码值为“0”时,输出白色
        if ($barcode[$x] == '1') {
            $color = $fg;
        } else {
            $color = $bg;
        }
        ImageFilledRectangle($img, ($x*$width)+30,5,($x+1)*$width+29,$height+$increment,$color);
    }

    ImageString($img, 5, 20, $height+5, $code[0], $fg);
    for ($x=0; $x<6; $x++) {
        // 左侧识别码
        ImageString($img, 5, $width*(8+$x*6)+30, $height+5, $code[$x+1], $fg);
        // 右侧识别码
        ImageString($img, 5, $width*(53+$x*6)+30, $height+5, $code[$x+7], $fg);
    }

    header("Content-Type: image/jpeg");
    ImageJPEG($img, "", 100);
}
?>

<form action="?">
输入EAN-13条形码(如果输入12位长度,将自动计算校验位)<input type="text" name="code"> <input type="submit" value="生成条码图片">
</form>
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 透过 PHP 生成 一维码

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