php获取远程图片的两种方式 curl socket

luinstein

方式一：Curl方式[已验证通过]

1. <?php
   
2. $url = "http://www.cxweb.com.cn/static/image/common/logo.png";
   
3. $filename = 'curl.gif';
   
4. //http://jb51.net
   
5. getImg($url, $filename);
   
6. /*
   
7. *@通过curl方式获取制定的图片到本地
   
8. *@ 完整的图片地址
   
9. *@ 要存储的文件名
   
10. */
    
11. function getImg($url = "", $filename = "") {
    
12. if(is_dir(basename($filename))) {
    
13. echo "The Dir was not exits";
    
14. Return false;
    
15. }
    
16. //去除URL连接上面可能的引号
    
17. $url = preg_replace( '/(?:^[\'"]+|[\'"\/]+$)/', '', $url );
    
18. $hander = curl_init();
    
19. $fp = fopen($filename,'wb');
    
20. curl_setopt($hander,CURLOPT_URL,$url);
    
21. curl_setopt($hander,CURLOPT_FILE,$fp);
    
22. curl_setopt($hander,CURLOPT_HEADER,0);
    
23. curl_setopt($hander,CURLOPT_FOLLOWLOCATION,1);
    
24. //curl_setopt($hander,CURLOPT_RETURNTRANSFER,false);//以数据流的方式返回数据,当为false是直接显示出来
    
25. curl_setopt($hander,CURLOPT_TIMEOUT,60);
    
26. curl_exec($hander);
    
27. curl_close($hander);
    
28. fclose($fp);
    
29. Return true;
    
30. }
    
31. ?>

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二、方式二Soket

1. <?php
   
2. $a = "http://www.cxweb.com.cn/static/image/common/logo.png";
   
3. $local = 'socket1.gif';
   
4. $aa = getImg($a,$local);
   
5. /*
   
6. *@ 完整的图片地址
   
7. *@ 要存储的文件名
   
8. */
   
9. function getImg( $url = "", $filename = "" ) {
   
10. if(is_dir(basename($filename))) {
    
11. echo "The Dir was not exits";
    
12. Return false;
    
13. }
    
14. //去除URL连接上面可能的引号
    
15. $url = preg_replace( '/(?:^[\'"]+|[\'"\/]+$)/', '', $url );
    
16. if (!extension_loaded('sockets')) return false;
    
17. //获取url各相关信息
    
18. preg_match( '/http:\/\/([^\/\:]+(\:\d{1,5})?)(.*)/i', $url, $matches );
    
19. if (!$matches) return false;
    
20. $sock = socket_create( AF_INET, SOCK_STREAM, SOL_TCP );
    
21. if ( ( $sock, $matches[1], $matches[2] ? substr($matches[2], 1 ) : 80 ) ) {
    
22. return false;
    
23. }
    
24. //图片的相对地址
    
25. $msg = 'GET ' . $matches[3] . " HTTP/1.1\r\n";
    
26. //主机名称
    
27. $msg .= 'Host: ' . $matches[1] . "\r\n";
    
28. $msg .= 'Connection: Close' . "\r\n\r\n";
    
29. socket_write( $sock, $msg );
    
30. $bin = '';
    
31. while ( $tmp = socket_read( $sock, 10 ) ) {
    
32. $bin .= $tmp;
    
33. $tmp = '';
    
34. }
    
35. $bin = explode("\r\n\r\n", $bin);
    
36. $img = $bin[1];
    
37. $h = fopen( $filename, 'wb' );
    
38. $res = fwrite( $h, $img ) === false ? false : true;
    
39. @socket_close( $sock );
    
40. Return $res;
    
41. }
    
42. ?>

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from:http://hi.baidu.com/yhyynh/blog/ ... 84fbb68326acb6.html