PHP 获取网页所有连接

function getHtml($url, $charset='utf-8')
{
	$curl = curl_init();
	//curl_setopt($curl, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:192.168.168.1', 'CLIENT-IP:192.168.168.1'));//IP
	curl_setopt($curl, CURLOPT_URL, $url);
	curl_setopt($curl, CURLOPT_REFERER, "");   //来路

	$user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : 'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.43 Safari/537.31';

	curl_setopt($curl, CURLOPT_USERAGENT, $user_agent);
	// 只需返回HTTP header
	// curl_setopt($curl, CURLOPT_HEADER, 1);
	// 页面内容我们并不需要
	// curl_setopt($curl, CURLOPT_NOBODY, 1);
	// 返回结果，而不是输出它
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	$html = curl_exec($curl);
	//$info = curl_getinfo($curl);

	//echo var_dump($info);

	if ($html === false) {
		//echo "cURL Error: " . curl_error($ch);

		return '';
	}

	curl_close($curl);

	if ($charset != 'utf-8')
	{
		$html = iconv($charset, "UTF-8", $html);
	}

	return $html;
}

header("Content-type: text/html; charset=utf-8");
include('simple_html_dom.php');

// 要打开 extension=php_mbstring.dll

//$url = 'http://www.baidu.com/s?wd=kaka';
$url = 'http://www.163.com/';

$str_html = getHtml($url, 'gbk');

$html = str_get_html($str_html);

$links = $html->find('a');

foreach($links as $link)
{
	$txt = trim($link->plaintext);
	echo $link->href . '[' . $txt . ']<br>';
}

$html = null;

代码下载：https://files.cnblogs.com/zjfree/php_get_html.rar