Create Square Thumbnails

square_thumbnail.php

<?php
function create_square_thumbnails($userfile_name, $userfile_type)
{
		//get the file and figure out what type of file it is and some of its attributes
		switch ($userfile_type)
		{
			case "image/pjpeg": $tempbig = imagecreatefromjpeg(IMG_PATH.$userfile_name);  break;
			case "image/jpeg": $tempbig = imagecreatefromjpeg(IMG_PATH.$userfile_name);  break;
			case "image/jpg": $tempbig = imagecreatefromjpeg(IMG_PATH.$userfile_name);  break;
			case "image/gif": $tempbig = imagecreatefromgif(IMG_PATH.$userfile_name);  break;
			case "image/x-png": $tempbig = imagecreatefrompng(IMG_PATH.$userfile_name);  break;
			case "image/png": $tempbig = imagecreatefrompng(IMG_PATH.$userfile_name);  break;
		}
		
		$bigsize = getimagesize(IMG_PATH.$userfile_name);
		$bigwidth = $bigsize[0];
		$bigheight = $bigsize[1];
		
		$tempsmall = imagecreatetruecolor(100, 100); 
		if($bigwidth > $bigheight)
		{
			$xstart = ($bigwidth/2)-($bigheight/2);
			
			imagecopyresampled($tempsmall, $tempbig, 0, 0, $xstart, 0, 100, 100, $bigheight, $bigheight); //create temp image to be moved
			
			switch ($userfile_type)
			{
				case "image/pjpeg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/jpeg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/jpg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/gif": imagegif($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/x-png": imagepng($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/png": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
			}
			 
			Imagedestroy($tempbig); 
			Imagedestroy($tempsmall); //destory temp image 
		}
		elseif($bigheight > $bigwidth)
		{
			$ystart = ($bigheight/2)-($bigwidth/2);
			
			imagecopyresampled($tempsmall, $tempbig, 0, 0, 0, $ystart, 100, 100, $bigwidth, $bigwidth);
			
			//get the file and figure out what type of file it is and some of its attributes
			switch ($userfile_type)
			{
				case "image/pjpeg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/jpeg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/jpg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/gif": imagegif($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/x-png": imagepng($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/png": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
			}
			 
			Imagedestroy($tempbig); 
			Imagedestroy($tempsmall); //destory temp images
		}
		else
		{
			imagecopyresampled($tempsmall, $tempbig, 0, 0, 0, 0, 100, 100, $bigwidth, $bigheight);
			
			switch ($userfile_type)
			{
				case "image/pjpeg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/jpeg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/jpg": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/gif": imagegif($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/x-png": imagepng($tempsmall, THUMB_PATH.$userfile_name, 95); break;
				case "image/png": imagejpeg($tempsmall, THUMB_PATH.$userfile_name, 95); break;
			}
			 
			Imagedestroy($tempbig); 
			Imagedestroy($tempsmall); //destory temp images
		}
}
?>