<?php  
  function resize($photo_src, $width, $name){  
 $parametr = getimagesize($photo_src);  
 list($width_orig, $height_orig) = getimagesize($photo_src);  
  $ratio_orig = $width_orig/$height_orig;  
 $new_width = $width;  
  $new_height = $width / $ratio_orig;  
 $newpic = imagecreatetruecolor($new_width, $new_height);  
 switch ( $parametr[2] ) {  
  case 1: $image = imagecreatefromgif($photo_src);  
   break;  
   case 2: $image = imagecreatefromjpeg($photo_src);  
   break;  
  case 3: $image = imagecreatefrompng($photo_src);  
   break;  
 }  
 imagecopyresampled($newpic, $image, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig);  
 imagejpeg($newpic, $name, 100);  
 return true;  
 }  
 ?>