PHP SNIPPET TO RESIZE IMAGE

Sometimes client can upload a large image and you might want to resize it. Below PHP snippet would enable you to do that.

PHP

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function resize_image($filename, $tmpname, $xmax, $ymax)   {       $ext = explode(".", $filename);       $ext = $ext[count($ext)-1];          if($ext == "jpg" || $ext == "jpeg")           $im = imagecreatefromjpeg($tmpname);       elseif($ext == "png")           $im = imagecreatefrompng($tmpname);       elseif($ext == "gif")           $im = imagecreatefromgif($tmpname);              $x = imagesx($im);       $y = imagesy($im);              if($x <= $xmax && $y <= $ymax)           return $im;          if($x >= $y) {           $newx = $xmax;           $newy = $newx * $y / $x;       }       else {           $newy = $ymax;           $newx = $x / $y * $newy;       }              $im2 = imagecreatetruecolor($newx, $newy);       imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);       return $im2;   }