PHP获取网页标题的3种实现方法代码实例

一、推荐方法 CURL获取

$c = curl_init();
$url = 'www.jb51.net';
curl_setopt($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",$data);}
preg_match("//i",$data, $title);
echo $title[1];
?>

二、使用file()函数

$lines_array = file('https://www.jb51.net/');
$lines_string = implode('', $lines_array);
$pos = strpos($lines_string,'utf-8');
if($pos===false){$lines_string = iconv("gbk","utf-8",$lines_string);}
eregi("", $lines_string, $title);
echo $title[1];
?>

三、使用file_get_contents

$content=file_get_contents("https://www.jb51.net/");
$pos = strpos($content,'utf-8');
if($pos===false){$content = iconv("gbk","utf-8",$content);}
$postb=strpos($content,'');
$length=$poste-$postb;
echo substr($content,$postb,$length);
?>