PHP下载远程文件到本地存储的代码

1. function GrabImage($url,$filename="") {
2. if($url=="") return false;
3. if($filename=="") {
4. $ext=strrchr($url,".");
5. if($ext!=".gif" && $ext!=".jpg") return false;
6. $filename=date("dMYHis").$ext;
7. }
8. ob_start();
9. readfile($url);
10. $img = ob_get_contents();
11. ob_end_clean();
12. $size = strlen($img);
13. $fp2=@fopen($filename, "a");
14. fwrite($fp2,$img);
15. fclose($fp2);
16. return $filename;
17. }
18. function gethttpimage($url){
19. if(!empty($url)){
20. $filename=uniqid().strrchr($url,".");
21. echo $filename;
22. $get_file=@file_get_contents($url);
23. if($get_file){
24. $fp=@fopen($filename,"w");
25. @fwrite($fp,$get_file);
26. @fclose($fp);
27. }
28. return $imgUrl;
29. }else{
30. return false;
31. }
32. }
33. //$img=GrabImage("http://img.it-home.org/data/attachment/forum/2016pic1/error_link.gif","");
34. $img=gethttpimage("http://img.it-home.org/data/attachment/forum/2016pic1/error_link.gif","");
35. if($img) echo '
    ';
36. else echo "false";
37. ?>

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PHP