一、推荐方法 CURL获取

<?php
$c = curl_init();
$url = \'www.phpstudy.net\';
curl_setopt($c, CURLOPT_URL, $url);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($c);
curl_close($c);
$pos = strpos($data,\'utf-8\');
if($pos===false){$data = iconv(\"gbk\",\"utf-8\",$data);}
preg_match(\"/<title>(.*)<\\/title>/i\",$data, $title);
echo $title[1];
?>

二、使用file()函数

<?php
$lines_array = file(\'http://www.phpstudy.net/\');
$lines_string = implode(\'\', $lines_array);
$pos = strpos($lines_string,\'utf-8\');
if($pos===false){$lines_string = iconv(\"gbk\",\"utf-8\",$lines_string);}
eregi(\"<title>(.*)</title>\", $lines_string, $title);
echo $title[1];
?>

三、使用file_get_contents

<?php
$content=file_get_contents(\"http://www.phpstudy.net/\");
$pos = strpos($content,\'utf-8\');
if($pos===false){$content = iconv(\"gbk\",\"utf-8\",$content);}
$postb=strpos($content,\'<title>\')+7;
$poste=strpos($content,\'</title>\');
$length=$poste-$postb;
echo substr($content,$postb,$length);
?>