Detailed tutorial on generating barcode images with php-PHP Tutorial-php.cn

Detailed tutorial on generating barcode images with php

巴扎黑

Release： 2023-03-16 07:52:01

Original

1344 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; I 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(&#39;0001101&#39;,&#39;0011001&#39;,&#39;0010011&#39;,&#39;0111101&#39;,&#39;0100011&#39;,
        &#39;0110001&#39;,&#39;0101111&#39;,&#39;0111011&#39;,&#39;0110111&#39;,&#39;0001011&#39;);
    $Rencode = array(&#39;1110010&#39;,&#39;1100110&#39;,&#39;1101100&#39;,&#39;1000010&#39;,&#39;1011100&#39;,
        &#39;1001110&#39;,&#39;1010000&#39;,&#39;1000100&#39;,&#39;1001000&#39;,&#39;1110100&#39;);
    $ends = &#39;101&#39;; $center = &#39;01010&#39;;
    /* Compute the EAN-13 Checksum digit */
    $ncode = &#39;0&#39;.$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

The above is the detailed content of Detailed tutorial on generating barcode images with php. For more information, please follow other related articles on the PHP Chinese website!