1 function download_file($file_name, $url) {
2 $ch = curl_init($url);
3 $fp = fopen($file_name, "wb");
4 // set URL and other appropriate options
5 $user_agent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727;';
6 $url_info = parse_url($url);
7 $host = $url_info['host'];
8 $header = array(
9 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
10 'Accept-Charset: UTF-8,*',
11 'Accept-Encoding: gzip, deflate',
12 'Accept-Language: en-us,en;q=0.5',
13 'Connection: keep-alive',
14 "Host: {$host}",
15 "User-Agent: {$user_agent}",
16 );
17 $options = array(CURLOPT_FILE => $fp,
18 /*CURLOPT_HEADER => 0,
19 CURLOPT_FOLLOWLOCATION => 1,
20 CURLOPT_REFERER => $url,
21 CURLOPT_TIMEOUT => 240
22 */
23 CURLOPT_HEADER => 0,
24 CURLOPT_FOLLOWLOCATION => 1,
25 CURLOPT_TIMEOUT => 240,
26 CURLOPT_HTTPHEADER => $header,
27 ); // 1 minute timeout (should be enough)
28
29 curl_setopt_array($ch, $options);
30 $ret = curl_exec($ch);
31 if (!$ret) {
32 var_export(curl_error($ch));
33 }
34 curl_close($ch); fclose($fp); return $ret;
35 }
36 function getinfo($uri) {
37 // start output buffering
38 ob_start();
39 // initialize curl with given uri
40 $ch = curl_init($uri);
41 $user_agent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727;';
42 $url_info = parse_url($uri);
43 $host = $url_info['host'];
44 $header = array(
45 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
46 'Accept-Charset: UTF-8,*',
47 'Accept-Encoding: gzip, deflate',
48 'Accept-Language: en-us,en;q=0.5',
49 'Connection: keep-alive',
50 "Host: {$host}",
51 "User-Agent: {$user_agent}",
52 );
53 curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
54 // make sure we get the header
55 curl_setopt($ch, CURLOPT_HEADER, 1);
56 // make it a http HEAD request
57 curl_setopt($ch, CURLOPT_NOBODY, 1);
58
59 $okay = curl_exec($ch);
60 curl_close($ch);
61 // get the output buffer
62 $head = ob_get_contents();
63 // clean the output buffer and return to previous
64 // buffer settings
65 ob_end_clean();
66
67 // gets you the numeric value from the Content-Length
68 // field in the http header
69 var_export($head);exit;
70 $regex = '@Content-Length:\s(\d+)@';
71 $count = preg_match($regex, $head, $matches);
72 // if there was a Content-Length field, its value
73 // will now be in $matches[1]
74 if(isset($matches[1])){
75 $size = $matches[1];
76 }else{
77 $size = 0;
78 }
79 $regex = '@Content-Type:\simage/(\w+)@';
80
81 $count = preg_match($regex, $head, $matches);
82 // if there was a Content-Length field, its value
83 // will now be in $matches[1]
84 if(isset($matches[1])){
85 $type = $matches[1];
86 }else{
87 $type = '';
88 }
89 //$last=round($size/(1024*1024),3);
90 //return $last.' MB';
91 return array('size' => $size, 'type' => $type);
92 }
93 function getext($filename) {
94 return substr(strrchr($filename, '.'), 1);
95 }
96 $valid_file_type = array(
97 'jpeg' => 'jpg',
98 'png' => 'png',
99 'gif' => 'gif',
100 );
101
102 $url = 'http://hiphotos.baidu.com/hackers365/pic/item/aa8b9a338d6f5518ac4b5fe6.jpg';
103 /*
104 $file_info = getinfo($url);
105 var_export($file_info);
106 $filename = basename($url);
107 $ext = $valid_file_type[$file_info['type']];
108 if ($ext != getext($filename)) {
109 $filename .= '.' . $ext;
110 }
111 var_export($filename);*/
112 download_file('/tmp/hacker.jpg', $url);
