PHP 实现的将图片转换为TXT

今天在用PHP写一个小插件的时候，遇到了一个小小的问题，就是需要将图片转换为TXT文本的内容。简单的说就是将图片转换为ASCII码，下面把代码分享给大家。

PHP 实现的将图片转换为TXT

i!lI;:,\"^`'. "; function getimgchars($color_tran,$chars){ $length = strlen($chars); $alpha=$color_tran['alpha']; $r=$color_tran['red']; $g=$color_tran['green']; $b=$color_tran['blue']; $gray = intval(0.2126 * $r + 0.7152 * $g + 0.0722 * $b); if($gray==0){ return '.'; } if($gray'.$char."";; } function resize_img($file_name,$chars,$flage=true){ //header('Content-Type: image/jpeg'); list($width, $height,$type) = getimagesize($file_name); $fun='imagecreatefrom' . image_type_to_extension($type, false); if($type==3){ $flage=false; } $fun($file_name); $new_height =100; $percent=$height/$new_height; $new_width=$width/$percent; $image_p = imagecreatetruecolor($new_width, $new_height); $image = $fun($file_name); imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height); if($flage){ return $image_p; }else{ return $image; } } $im=resize_img($file_name,$chars); $width=imagesx($im); $height=imagesy($im); $back_text=""; for($i=1;$i"; } echo "

";
echo $back_text;
echo "

"; //file_put_contents('1.txt',$back_text); ，