PHP downloads remote images and saves them locally

高洛峰
Release: 2016-10-20 13:44:48
Original
1227 people have browsed it

Download images from remote server to local

<?php

 /*
*功能:php完美实现下载远程图片保存到本地
*参数:文件url,保存文件目录,保存文件名称,使用的下载方式
*当保存文件名称为空时则使用远程文件原来的名称
*/
function getImage($url,$save_dir=&#39;&#39;,$filename=&#39;&#39;,$type=0){
    if(trim($url)==&#39;&#39;){
        return array(&#39;file_name&#39;=>&#39;&#39;,&#39;save_path&#39;=>&#39;&#39;,&#39;error&#39;=>1);
    }
    if(trim($save_dir)==&#39;&#39;){
        $save_dir=&#39;./&#39;;
    }
    if(trim($filename)==&#39;&#39;){//保存文件名
        $ext=strrchr($url,&#39;.&#39;);
        if($ext!=&#39;.gif&#39;&&$ext!=&#39;.jpg&#39;){
            return array(&#39;file_name&#39;=>&#39;&#39;,&#39;save_path&#39;=>&#39;&#39;,&#39;error&#39;=>3);
        }
        $filename=time().$ext;
    }
    if(0!==strrpos($save_dir,&#39;/&#39;)){
        $save_dir.=&#39;/&#39;;
    }
    //创建保存目录
    if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){
        return array(&#39;file_name&#39;=>&#39;&#39;,&#39;save_path&#39;=>&#39;&#39;,&#39;error&#39;=>5);
    }
    //获取远程文件所采用的方法 
    if($type){
        $ch=curl_init();
        $timeout=300;
        curl_setopt($ch,CURLOPT_URL,$url);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
        $img=curl_exec($ch);
        curl_close($ch);
    }else{
        ob_start(); 
        readfile($url);
        $img=ob_get_contents(); 
        ob_end_clean(); 
    }
    //$size=strlen($img);
    //文件大小 
    $fp2=@fopen($save_dir.$filename,&#39;a&#39;);
    fwrite($fp2,$img);
    fclose($fp2);
    unset($img,$url);
    return array(&#39;file_name&#39;=>$filename,&#39;save_path&#39;=>$save_dir.$filename,&#39;error&#39;=>0);
}
Copy after login

Demo example:

// 示例
// 如果需要下载的图片特别多,开10分钟的限制
// set_time_limit(600);

 $url = "http://img18.poco.cn/mypoco/qing/20161009/09/3989973453065773927_768x1024_320.jpg";

 $filename = "example".".jpg";
 getImage($url,$save_dir=&#39;&#39;,$filename,$type=1);
Copy after login


Related labels:
php
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!