php generates barcode pictures

墨辰丷
Release: 2023-03-26 12:36:02
Original
1294 people have browsed it

This article mainly introduces relevant information about the detailed examples of php generating barcode pictures. I hope this article can help everyone. Friends in need can refer to

php generates barcode pictures. Detailed explanation of the example

Because of the user's needs, I wrote a barcode; used PHP to generate a barcode image. Everyone should be much better at this than me. Create a test file in the root directory of your project (directly Put the following code into it and run it to have a look. I also plagiarized it from others). In an actual project, you can encapsulate the following code into a function under a public class file and then call it.


class testinfo{
  function UPCAbarcode($code) {
    $trans_code = $code;
    $lw = 2.2; $hi = 40;
    $Lencode = array('0001101','0011001','0010011','0111101','0100011',
        '0110001','0101111','0111011','0110111','0001011');
    $Rencode = array('1110010','1100110','1101100','1000010','1011100',
        '1001110','1010000','1000100','1001000','1110100');
    $ends = '101'; $center = '01010';
    /* Compute the EAN-13 Checksum digit */
    $ncode = '0'.$code;
    $even = 0; $odd = 0;
    for ($x=0;$x<12;$x++) {
      if ($x % 2) {
        $odd += $ncode[$x];
      } else { $even += $ncode[$x];
      }
    }
    $code.=(10 - (($odd * 3 + $even) % 10)) % 10;
    /* Create the bar encoding using a binary string */
    $bars=$ends;
    $bars.=$Lencode[$code[0]];
    
    for($x=1;$x<6;$x++) {
      $bars.=$Lencode[$code[$x]];
    }
    $bars.=$center;
    for($x=6;$x<12;$x++) {
      $bars.=$Rencode[$code[$x]];
    }
    $bars.=$ends;
    /* Generate the Barcode Image */
    $img = ImageCreate($lw*75+30,$hi-3);  // 95
    $fg = ImageColorAllocate($img, 0, 0, 0);
    $bg = ImageColorAllocate($img, 255, 255, 255);
    ImageFilledRectangle($img, 0, 0, $lw*75+30, $hi+30, $bg);
    $shift=10;
    for ($x=0;$x<strlen($bars);$x++) {
      if (($x<0) || ($x>=45 && $x<46) || ($x >=85)) {
        $sh=10;
      } else { $sh=0;
      }
      if ($bars[$x] == &#39;1&#39;) {
        $color = $fg;
      } else { $color = $bg;
      }
      ImageFilledRectangle($img, ($x*$lw)+15,5,($x+1)*$lw+14,$hi+5+$sh,$color);
    }
    /* Add the Human Readable Label */
    ImageString($img,4,5,$hi-5,$code[0],$fg);
    for ($x=0;$x<5;$x++) {
      ImageString($img,5,$lw*(13+$x*6)+15,$hi+5,$code[$x+1],$fg);
      ImageString($img,5,$lw*(53+$x*6)+15,$hi+5,$code[$x+6],$fg);
    }
    ImageString($img,4,$lw*95-7,$hi,$code[11],$fg);
    /* Output the Header and Content. */
    header("Content-Type: image/png");
    ImagePNG($img);
  }
//}
echo UPCAbarcode(&#39;201212070099&#39;);
Copy after login


Related recommendations:

vue.js method to generate barcode

php generates code128 barcode example sharing

PHP generates barcode example

The above is the detailed content of php generates barcode pictures. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!