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远程图片保存到本地
Y的博客
Original
989 people have browsed it
/*
*功能:php完美实现***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***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='',$filename='',$type=0){
    if(trim($url)==''){
        return array('file_name'=>'','save_path'=>'','error'=>1);
    }
    if(trim($save_dir)==''){
        $save_dir='./';
    }
    if(trim($filename)==''){//保存文件名
        $ext=strrchr($url,'.');
        if($ext!='.gif'&&$ext!='.jpg'&&$ext!='png'){
            return array('file_name'=>'','save_path'=>'','error'=>3);
        }
        $filename=time().$ext;
    }
    if(0!==strrpos($save_dir,'/')){
        $save_dir.='/';
    }
    //创建保存目录
    if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){
        return array('file_name'=>'','save_path'=>'','error'=>5);
    }
    //获取远程文件所采用的方法
    if($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);
    //文件大小
    $fp2=@fopen($save_dir.$filename,'a');
    fwrite($fp2,$img);
    fclose($fp2);
    unset($img,$url);
    return array('file_name'=>$filename,'save_path'=>$save_dir.$filename,'error'=>0);
}


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