How to save php network pictures to local

PHP Get network pictures and save them in a local directory Ideas:

Related recommendations: "php Getting Started Tutorial"

Code As follows:

function file_exists_S3($url)
{
    $state = @file_get_contents($url,0,null,0,1);//获取网络资源的字符内容
    if($state){
        $filename = date("dMYHis").'.jpg';//文件名称生成
        ob_start();//打开输出
        readfile($url);//输出图片文件
        $img = ob_get_contents();//得到浏览器输出
        ob_end_clean();//清除输出并关闭
        $size = strlen($img);//得到图片大小
        $fp2 = @fopen($filename, "a");
        fwrite($fp2, $img);//向当前目录写入图片文件，并重新命名
        fclose($fp2);
        return 1;
    }
    else{
        return 0;
    }
}

Call:

var_dump(file_exists_S3('http://images2015.cnblogs.com/blog/1156899/201705/1156899-20170518182731010-1445627236.png'));

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