Php: image resize code resize all folder images

img-resize-code.php

<!--image resize-->
<?php
require('img_resize_thumb.php');
$obj = new image_resize_thumb();
$obj->set_img_thumb_max_width(210);
$obj->set_img_thumb_max_height(210);
$obj->image_file_path("source_folder_path/","destination_folder_path/");
?>

img_resize_thumb.php

<?PHP
class image_resize_thumb
{
var $set_img_thumb_max_width;
var $set_img_thumb_max_height;
var $img_new_thumb_width;
var $img_new_thumb_height;
var $mime;
var $image;
var $img_thumb_width;
var $img_thumb_height;
var $img_path;
var $img_thumb_save_path;
var $img;

    function image_file_path($img_file_path,$img_thumbnail_path){
	       $img_type = array("jpg", "jpeg", "png", "gif");
           $files = scandir($img_file_path);
			array_shift($files);
			array_shift($files);
			foreach($files as $key=>$value){
			
				 $ext = pathinfo($value, PATHINFO_EXTENSION);
				 if (in_array($ext, $img_type)) {
				 
					 $this->img_path = $img_file_path.$value;
					 $this->img_thumb_save_path = $img_thumbnail_path.$value;
					 $this->img_resize_to_thumb();
				 
				 }
		 }


	      
	}
	
	function set_img_thumb_max_width($img_thumb_width)
	{
		$this->set_img_thumb_max_width = $img_thumb_width;
	}
	function set_img_thumb_max_height($img_thumb_height)
	{
		$this->set_img_thumb_max_height = $img_thumb_height;
	}
	function get_mime()
	{
		$img_data = getimagesize($this->img_path);
		$this->mime = $img_data['mime'];
	}
	function image_create()
	{
		switch($this->mime)
		{
			case 'image/jpeg':
				$this->image = imagecreatefromjpeg($this->img_path);
			break;
			
			case 'image/gif':
				$this->image = imagecreatefromgif($this->img_path);
			break;
			
			case 'image/png':
				$this->image = imagecreatefrompng($this->img_path);
			break;
		}
	}	
	function img_resize_to_thumb()
		{
				set_time_limit(0);
				$this->get_mime();
				$this->image_create();
				$this->img_thumb_width = imagesx($this->image);
				$this->img_thumb_height = imagesy($this->image);
				$this->img_set_dimension();
				$resized_image = imagecreatetruecolor($this->img_new_thumb_width,$this->img_new_thumb_height);
				imagecopyresampled($resized_image, $this->image, 0, 0, 0, 0, $this->img_new_thumb_width, $this->img_new_thumb_height,$this->img_thumb_width, $this->img_thumb_height);
				imagejpeg($resized_image,$this->img_thumb_save_path);
						
		}
		
		
		function img_set_dimension()
		{
				
				if($this->img_thumb_width==$this->img_thumb_height)
				{
					$case = 'c1';
				}
				elseif($this->img_thumb_width > $this->img_thumb_height)
				{
					$case = 'c2';
				}
				else
				{
					 $case = 'c3'; 
				}
				
				
				
				if($this->img_thumb_width>$this->set_img_thumb_max_width && $this->img_thumb_height>$this->set_img_thumb_max_height)
				{
					$cond = 'c1';
				}
				elseif($this->img_thumb_width>$this->set_img_thumb_max_width && $this->img_thumb_height<=$this->set_img_thumb_max_height)
				{
					$cond = 'c1';
				}
				else
				{
					$cond = 'c3';
				}
								
				switch($case)
				{
					case 'c1':
						$this->img_new_thumb_width = $this->set_img_thumb_max_width;
						$this->img_new_thumb_height = $this->set_img_thumb_max_height;
					break;
					case 'c2':
						$img_ratio = $this->img_thumb_width/$this->img_thumb_height;
						$amount = $this->img_thumb_width - $this->set_img_thumb_max_width;
						$this->img_new_thumb_width = $this->img_thumb_width - $amount;
						$this->img_new_thumb_height = $this->img_thumb_height - ($amount/$img_ratio);
					break;
					case 'c3':
						$img_ratio = $this->img_thumb_height/$this->img_thumb_width;
						$amount = $this->img_thumb_height - $this->set_img_thumb_max_height;
						$this->img_new_thumb_height = $this->img_thumb_height - $amount;
						$this->img_new_thumb_width = $this->img_thumb_width - ($amount/$img_ratio);
					break;
				} 
					
		}
}
?>