PHP获取网页标题的3种实现方法代码实例

PHP获取网页标题的3种实现方法,分别使用CURL、file()函数、file_get_contents实现,需要的朋友可以参考下
一、推荐方法 CURL获取

<?php
$c = curl_init();
$url = ‘www.45it.com’;
curl_setopt($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.45it.com/’);
$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.45it.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);
?>