get_img_in_content.php

<?php 
/**
* class Get_img_in_content
* @todo: Automatic save image in content
* @author: Vi Hoang Son
* @version: 1 - 2015
*/
class Get_img_in_content
{
	var $dir;// direct default
	var $max_width;//Giá trị tối đa của hình ảnh được xử lý, nếu lớn hơn sẽ dùng hình ảnh của trang nguồn
	var $max_size;
	function __construct(){

		if(defined(PATH_UPLOAD_IMG)){
			throw new Exception("Don't define PATH_UPLOAD_IMG", 1);
		}
		// direct default
		// Default value: /uploads/img
		$this->dir			= defined(AUTOSAVEIMG_MAXWIDTH)? FCPATH.PATH_UPLOAD_IMG : FCPATH."uploads/img";;
		//Giá trị tối đa của hình ảnh được xử lý, nếu lớn hơn sẽ dùng hình ảnh của trang nguồn
		//Default value: 5000
		$this->max_width	= defined(AUTOSAVEIMG_MAXWIDTH)? AUTOSAVEIMG_MAXWIDTH : 5000;
		//Giá trị tối đa của hình ảnh được xử lý, nếu lớn hơn sẽ dùng hình ảnh của trang nguồn
		//Default value: 10000
		$this->max_size		= defined(AUTOSAVEIMG_MAXSIZEFILE)? AUTOSAVEIMG_MAXSIZEFILE : 10000;;
		//if don't have direc then make new dir
		if(!is_dir($this->dir)){
			@mkdir($this->dir);
		}
	}
//=========================================================
	/*
	* Automatic save image in content
	* @param: string
	* @return: string
	*/
	public function do_get_img_from_content($data=array()){
		if(!AUTOSAVEIMG_FLAG) {
			return $data["content"];
		}
		list($title,$content)	= $data;
		$remote_images=$this->get_all_img($content);
		if(!$remote_images) return $content;
		$file="";
		$i=1;
		foreach ($remote_images as $key => $link) {
			if(!preg_match("/^http:\/\/|https:\/\//", $link)){
				continue;
			}
			list($width, $height, $type, $attr) = @getimagesize($link);
			if($width > $this->max_width || $width > $this->max_width  ) continue;

			$file=$this->download_image($link);

			$type= $this->getFileType($file);
			$filename=$this->get_filename_from_url($link);
			if(!$filename){
				$filename=md5(time()).".".$type;
			}
			$filename=mod_rewrite($title)."_".$i.".".$type;
			if(!file_put_contents($this->dir."/".$filename, $file)) {
				continue;
			}else{
				$i++;
			}

			$content = str_replace($value, base_url().$this->dir."/".$filename, $content);
		}
		return  $content;
	}
//=========================================================
	/**
		* 
		* @param
		*
		* @return 
		* @author vihoangson
	**/
	public function get_all_img($content){

		$remote_images = array();
		$preg = preg_match_all('/<img.*?src=\"((?!\").*?)\"/i', stripslashes($content), $matches);
		if ($preg) $remote_images = $matches[1];
		$preg = preg_match_all('/<img.*?src=\'((?!\').*?)\'/i', stripslashes($content), $matches);
		if ($preg) $remote_images = array_merge($remote_images, $matches[1]);	
		if(is_array($remote_images))
			return 	$remote_images;
		return false;
	}
//=========================================================
	/**
		* 
		* @param
		*
		* @return 
		* @author vihoangson
	**/
	public function getFileType($file){
		$bin = substr($file,0,2);
		$strInfo = @unpack("C2chars", $bin);
		$typeCode = intval($strInfo['chars1'].$strInfo['chars2']);
		switch ($typeCode) {
			case 7790: $fileType = 'exe'; return false;
			case 7784: $fileType = 'midi'; return false;
			case 8297: $fileType = 'rar'; return false;
			case 255216: $fileType = 'jpg'; $mime = 'image/jpeg'; return $fileType;
			case 7173: $fileType = 'gif'; $mime = 'image/gif'; return $fileType;
			case 6677: $fileType = 'bmp'; $mime = 'image/bmp'; return $fileType;
			case 13780: $fileType = 'png'; $mime = 'image/png'; return $fileType;
			default: return false;
		}
	}	
//=========================================================
	/**
		* 
		* @param
		*
		* @return 
		* @author vihoangson
	**/
	public function download_image($image_url) {
		$file = '';
		// file_get_contents
		if (function_exists('file_get_contents')) {
			$file = @file_get_contents($image_url);
		}
		
		// curl
		if (!$file && function_exists('curl_init')) {
			$ch = curl_init();
			$timeout = 5;
			curl_setopt($ch, CURLOPT_URL, $image_url);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
			$file = curl_exec($ch);
			curl_close($ch);
		}
		$img = @imagecreatefromstring($file);
		// GD
		if (!$img && function_exists('fsockopen')) {
			try{
				$type = $this->fsockopen_image_header($image_url);
				if ($type && in_array($type, array('image/jpeg', 'image/gif', 'image/png'))) {
					$type = substr($type, 6);
					$img = call_user_func("imagecreatefrom{$type}", $image_url);
					ob_start();
					call_user_func("image{$type}", $img);
					$file = ob_get_contents();
					ob_end_clean();
					imagedestroy($img);
				} else {
					$file = '';
				}
			} catch (Exception $e) {
				echo $e->getMessage();
			}
		}
		if(!$file){
			return false;
		}
		return $file;
	}
//=========================================================
	/**
		* get_filename_from_url
		* @param
		* $url(text)
		* @return name of url
		* @author vihoangson
	**/
	public function get_filename_from_url($url) {
		$url = parse_url($url);
		$path = $url['path'];
		$filename = explode('/', $path);
		return $filename[count($filename)-1];
	}

//=========================================================
	/**
		* get_img()
		* Save hình về local khi truyền vào link.
		*
		* @param
		* $link(string)
		* $title(string)
		* $options=array(
		*	"return"=>"info_file",
		* )
		* @return void
		* @author vihoangson
	**/
	public function get_img($link,$title=null,$options=array()){
		if(strlen($title)>20){throw new Exception("String too long", 100);}
		if(!$title){
			$title="img-".time();
		}
		$i=time();
		list($width, $height, $type, $attr) = @getimagesize($link);	
		if($width > $this->max_width || $width > $this->max_width){
			return false;
		}
		if(!preg_match("/^http:\/\/|https:\/\//", $link)){
			$file=$this->download_image($link);
		}
		$type= $this->getFileType($file);
		$filename=$this->get_filename_from_url($link);
		if(!$filename){
			$filename=md5(time()).".".$type;
		}
		$filename=mod_rewrite($title)."_".$i.".".$type;

		if(!file_put_contents($this->dir."/".$filename, $file)) {
			throw new Exception("Can't write file", 500);
		}else{
			if(!isset($options["return"])) return true;
			switch($options["return"]){
				case "info_file":
					return array(
						"name_file" => $filename,
						"link_file" => "/".PATH_UPLOAD_IMG."/".$filename,
						);
				break;
				default:
					return true;
				break;
			}
		}
	}
}
 ?>