<?php
class gd_library{
public function resize($target, $newcopy, $w, $h, $ext){
list($w_orig, $h_orig) = getimagesize($target);
if ($w_orig > $w) {
$scale_ratio = $w_orig / $h_orig;
if (($w / $h) > $scale_ratio) {
$w = $h * $scale_ratio;
} else {
$h = $w / $scale_ratio;
}
} else if ($w_orig < $w) {
$w = $w_orig;
$h = $h_orig;
}
$img = "";
$ext = strtolower($ext);
if ($ext == "gif"){
$img = imagecreatefromgif($target);
} else if($ext =="png"){
$img = imagecreatefrompng($target);
} else {
$img = imagecreatefromjpeg($target);
}
$tci = imagecreatetruecolor($w, $h);
// imagecopyresampled(dst_img, src_img, dst_x, dst_y, src_x, src_y, dst_w, dst_h, src_w, src_h)
imagecopyresampled($tci, $img, 0, 0, 0, 0, $w, $h, $w_orig, $h_orig);
if ($ext == "gif"){
imagegif($tci, $newcopy);
} else if($ext =="png"){
imagepng($tci, $newcopy);
} else {
imagejpeg($tci, $newcopy, 84);
}
}
}
?>