From: http://blog.csdn.net/iefreer/article/details/46930239
直接上代码
<?php function dlfile1($file_url, $save_to) { $in = fopen($file_url, "rb"); $out = fopen($save_to, "wb"); while ($chunk = fread($in,8192)) { fwrite($out, $chunk, 8192); } fclose($in); fclose($out); } function dlfile_curl($file_url, $save_to) // 不支持https { $ch = curl_init(); curl_setopt($ch, CURLOPT_POST, 0); curl_setopt($ch,CURLOPT_URL, $file_url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $file_content = curl_exec($ch); curl_close($ch); if(!$file_content) { echo "download file failed"; return; } $downloaded_file = fopen($save_to, 'w'); fwrite($downloaded_file, $file_content); fclose($downloaded_file); } function dlfile3($file_url, $save_to) { $content = file_get_contents($file_url); file_put_contents($save_to, $content); } $url = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQFM8TwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAyM1lwVXBCRWNkQ20xNmV5TDFwMUQAAgSO1QdZAwQAjScA"; //$url = 'http://avatar.csdn.net/9/D/D/1_iefreer.jpg'; dlfile3($url, 'aaa.jpg');