[PHP][Functions]根据URL地址获得网页内容的多种方法

   根据URL地址获得网页内容的多种方法，但我没有试过！

<?php //获取所有内容url保存到文件 function get_index($save_file, $prefix="index_"){ $count = 68; $i = 1; if (file_exists($save_file)) @unlink($save_file); $fp = fopen($save_file, "a+") or die("Open ". $save_file ." failed"); while($i<$count){ $url = $prefix . $i .".htm"; echo "Get ". $url ."..."; $url_str = get_content_url(get_url($url)); echo " OK/n"; fwrite($fp, $url_str); ++$i; } fclose($fp); } //获取目标多媒体对象 function get_object($url_file, $save_file, $split="|--:**:--|"){ if (!file_exists($url_file)) die($url_file ." not exist"); $file_arr = file($url_file); if (!is_array($file_arr) || empty($file_arr)) die($url_file ." not content"); $url_arr = array_unique($file_arr); if (file_exists($save_file)) @unlink($save_file); $fp = fopen($save_file, "a+") or die("Open save file ". $save_file ." failed"); foreach($url_arr as $url){ if (empty($url)) continue; echo "Get ". $url ."..."; $html_str = get_url($url); echo $html_str; echo $url; exit; $obj_str = get_content_object($html_str); echo " OK/n"; fwrite($fp, $obj_str); } fclose($fp); } //遍历目录获取文件内容 function get_dir($save_file, $dir){ $dp = opendir($dir); if (file_exists($save_file)) @unlink($save_file); $fp = fopen($save_file, "a+") or die("Open save file ". $save_file ." failed"); while(($file = readdir($dp)) != false){ if ($file!="." && $file!=".."){ echo "Read file ". $file ."..."; $file_content = file_get_contents($dir . $file); $obj_str = get_content_object($file_content); echo " OK/n"; fwrite($fp, $obj_str); } } fclose($fp); } //获取指定url内容 function get_url($url){ $reg = '/^http:////[^//].+$/'; if (!preg_match($reg, $url)) die($url ." invalid"); $fp = fopen($url, "r") or die("Open url: ". $url ." failed."); while($fc = fread($fp, 8192)){ $content .= $fc; } fclose($fp); if (empty($content)){ die("Get url: ". $url ." content failed."); } return $content; } //使用socket获取指定网页 function get_content_by_socket($url, $host){ $fp = fsockopen($host, 80) or die("Open ". $url ." failed"); $header = "GET /".$url ." HTTP/1.1/r/n"; $header .= "Accept: */*/r/n"; $header .= "Accept-Language: zh-cn/r/n"; $header .= "Accept-Encoding: gzip, deflate/r/n"; $header .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; InfoPath.1; .NET CLR 2.0.50727)/r/n"; $header .= "Host: ". $host ."/r/n"; $header .= "Connection: Keep-Alive/r/n"; //$header .= "Cookie: cnzz02=2; rtime=1; ltime=1148456424859; cnzz_eid=56601755-/r/n/r/n"; $header .= "Connection: Close/r/n/r/n"; fwrite($fp, $header); while (!feof($fp)) { $contents .= fgets($fp, 8192); } fclose($fp); return $contents; } //获取指定内容里的url function get_content_url($host_url, $file_contents){ //$reg = '/^(#|javascript.*?|ftp:////.+|http:////.+|.*?href.*?|play.*?|index.*?|.*?asp)+$/i'; //$reg = '/^(down.*?/.html|/d+_/d+/.htm.*?)$/i'; $rex = "/([hH][rR][eE][Ff])/s*=/s*['/"]*([^>'/"/s]+)[/"'>]*/s*/i"; $reg = '/^(down.*?/.html)$/i'; preg_match_all ($rex, $file_contents, $r); $result = ""; //array(); foreach($r as $c){ if (is_array($c)){ foreach($c as $d){ if (preg_match($reg, $d)){ $result .= $host_url . $d."/n"; } } } } return $result; } //获取指定内容中的多媒体文件 function get_content_object($str, $split="|--:**:--|"){ $regx = "/href/s*=/s*['/"]*([^>'/"/s]+)[/"'>]*/s*(<b>.*?<//b>)/i"; preg_match_all($regx, $str, $result); if (count($result) == 3){ $result[2] = str_replace("<b>多媒体： ", "", $result[2]); $result[2] = str_replace("</b>", "", $result[2]); $result = $result[1][0] . $split .$result[2][0] . "/n"; } return $result; } ?>