<?php
ini_set("memory_limit", "64M");

/*
	$filenamepath = image to be resized
	$newfilename = added to filename to for each use to keep from overwriting images created example thumbnail_$filename is how it will be saved.
	$path = where the image should be stored and accessed. 
	$newwidth = resized width could be larger or smaller
	$newheight = resized height could be larger or smaller
		
	SAMPLE OF FUNCTION: makeimage('image.jpg','fullimage_','imgs/',250,250)	
*/
 
//IMAGE RESIZE FUNCTION FOLLOW ABOVE DIRECTIONS
function makeimage($filenamepath,$newfilename,$path,$newwidth,$newheight) {
	$patharr=explode("/",$filenamepath);
	$num=count($patharr);
	$filename=$patharr[$num-1];

	//SEARCHES IMAGE NAME STRING TO SELECT EXTENSION (EVERYTHING AFTER . )
	//$image_type = strstr($filename, '.');
	$image_type = ".".pathinfo($filenamepath, PATHINFO_EXTENSION);
	
	//SWITCHES THE IMAGE CREATE FUNCTION BASED ON FILE EXTENSION
		switch(strtolower($image_type)) {
			case '.jpg':
				$source = imagecreatefromjpeg($filenamepath);
				break;
			case '.png':
				$source = imagecreatefrompng($filenamepath);
				break;
			case '.gif':
				$source = imagecreatefromgif($filenamepath);
				break;
			default:
				echo("Error Invalid Image Type");
				die;
				break;
			}
	
	//CREATES THE NAME OF THE SAVED FILE
	$file = $newfilename . $filename;
	
	//CREATES THE PATH TO THE SAVED FILE
	$fullpath = $path . $file;

	//FINDS SIZE OF THE OLD FILE
	list($width, $height) = getimagesize($filenamepath);

	//CREATES IMAGE WITH NEW SIZES
	$thumb = imagecreatetruecolor($newwidth, $newheight);

	//RESIZES OLD IMAGE TO NEW SIZES
	imagecopyresampled($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

	//SAVES IMAGE AND SETS QUALITY || NUMERICAL VALUE = QUALITY ON SCALE OF 1-100
	imagejpeg($thumb, $fullpath, 80);

	//CREATING FILENAME TO WRITE TO DATABSE
	$filepath = $fullpath;
	
	//RETURNS FULL FILEPATH OF IMAGE ENDS FUNCTION
	return $filepath;

}

?>