Image Resizing Quality

[ryan_b83]

Hello, I am currently using the following function to resize and move a validated image. However i notice that the quality of the image after being resized is not 100% as good as it would be if i did it in fireworks or photoshop. Is there a better method to maintin high quality images? Or is this a limitation of php?

Thanks,
Ryan

function resize_move_image($file, $upfile, $max_width, $max_height){
 $size = GetImageSize($file);
 $width = $size[0];
 $height = $size[1];
 
 
 $x_ratio = $max_width / $width;
 $y_ratio = $max_height / $height;
 if ( ($width <= $max_width) && ($height <= $max_height) ) {
 $tn_width = $width;
 $tn_height = $height;
 }
 else if (($x_ratio * $height) < $max_height) {
 $tn_height = ceil($x_ratio * $height);
 $tn_width = $max_width;
 }
 else {
 $tn_width = ceil($y_ratio * $width);
 $tn_height = $max_height;
 }
 
 $quality = 100; 
 $destimg=imagecreatetruecolor($tn_width,$tn_height) or die("Problem In Creating image"); 
    
 $srcimg=imagecreatefromjpeg($file) or die("Problem In opening Source Image"); 
   
 imagecopyresized($destimg,$srcimg,0,0,0,0,$tn_width,$tn_height,ImageSX($srcimg),ImageSY($srcimg)) or die("Problem In resizing"); 
   
 imagejpeg($destimg,$upfile,$quality) or die("Problem In saving"); 
}

[FalseDawn]

Use imagecopyresampled instead of imagecopyresized
[us3.php.net...]

[ryan_b83]

Works Great!

Thanks!