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How does PHP, a website construction company, download remote images and save them locally?

Source: Shangpin China | Type: website encyclopedia | Time: April 25, 2019
PHP custom function, how to download remote pictures and save them locally? Please take a look at the code
/*
*Function: php realizes downloading remote pictures and saving them locally
*Parameters: file url, save file directory, save file name, download method used
*When the save file name is empty, the original name of the remote file is used
*/
function getImage($url,$save_dir='',$filename='',$type=0){
    if(trim($url)==''){
        return array('file_name'=>'','save_path'=>'','error'=>1);
    }
    if(trim($save_dir)==''){
        $save_dir='./';
    }
If (trim ($filename)=='') {//Save the file name
        $ext=strrchr($url,'.');
        if($ext!='.gif'&&$ext!='.jpg'&&$ext!='.jpeg'&&$ext!='.JPG'&&$ext!='.GIF'&&$ext!='.JPEG'&&$ext!='.png'&&$ext!='.PNG'){
            return array('file_name'=>'','save_path'=>'','error'=>3);
        }
        //$filename=time().$ ext;
        $arr = @explode('/',$url);
        $cc = count($arr);
        $dd = $cc-1;
        $filename= $arr[$dd];
    }
    if(0!==strrpos($save_dir,'/')){
        $save_dir.='/';
    }
//Create Save Directory
    if(!file_exists($save_dir)&&! mkdir($save_dir,0777,true)){
        return array('file_name'=>'','save_path'=>'','error'=>5);
    }
//The method used to obtain remote files
    if($type){
        $ch=curl_init();
        $timeout=5;
        curl_setopt($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);
//File size
    $fp2=@fopen($save_dir.$filename,'a');
    fwrite($fp2,$img);
    fclose($fp2);
    unset($img,$url);
    return array('file_name'=>$filename,'save_path'=>$save_dir.$filename,'error'=>0);
}
Note: Folders need to be created in advance
Source of this article Shangpin China: website construction company
Source Statement: This article is original or edited by Shangpin China's editors. If it needs to be reproduced, please indicate that it is from Shangpin China. The above contents (including pictures and words) are from the Internet. If there is any infringement, please contact us in time (010-60259772).
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Disclaimer

Thank you very much for visiting our website. Please read all the terms of this statement carefully before you use this website.

1. Part of the content of this site comes from the network, and the copyright of some articles and pictures involved belongs to the original author. The reprint of this site is for everyone to learn and exchange, and should not be used for any commercial activities.

2. This website does not assume any form of loss or injury caused by users to themselves and others due to the use of these resources.

3. For issues not covered in this statement, please refer to relevant national laws and regulations. In case of conflict between this statement and national laws and regulations, the national laws and regulations shall prevail.

4. If it infringes your legitimate rights and interests, please contact us in time, and we will delete the relevant content at the first time!

Contact: 010-60259772
E-mail: [email protected]