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php实现图片转换成ASCII码的方法_PHP

WBOY
WBOYOriginal
2016-05-30 14:59:201215browse

本文实例讲述了php实现图片转换成ASCII码的方法。分享给大家供大家参考。具体如下：

php图片转换成ASCII码，转换后可以直接通过字符串显示图片

<html>
 <head>
  <title>Ascii</title>
  <style>
   body{
    line-height:0;
    font-size:1px;
   }
  </style>
 </head>
 <body>
   <&#63;php
  $image = 'image.jpg';
  // Supports http if allow_url_fopen is enabled
  $image = file_get_contents($image);
  $img = imagecreatefromstring($image);
  $width = imagesx($img);
  $height = imagesy($img);
  for($h=0;$h<$height;$h++){
   for($w=0;$w<=$width;$w++){
    $rgb = imagecolorat($img, $w, $h);
    $a = ($rgb >> 24) & 0xFF;
    $r = ($rgb >> 16) & 0xFF;
    $g = ($rgb >> 8) & 0xFF;
    $b = $rgb & 0xFF;
    $a = abs(($a / 127) - 1);
    if($w == $width){
     echo '<br>';
    }else{
      echo '<span style="color:rgba('.$r.','.$g.','.$b.','.$a.');">#</span>';
    }
   }
  }
  &#63;>
 </body>
</html>

希望本文所述对大家的php程序设计有所帮助。

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