用php curl模块来测试网页有没有重定向

 

//下面是测试用的URL列表
$urls = array(
    "http://www.baidu.com",
    "http://www.google.com"
);
/*
 * 测试用的浏览器信息
 *


*/
$browsers = array(
    "standard" => array (
        "user_agent" => "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6 (.NET CLR 3.5.30729)",
        "language" => "en-us,en;q=0.5"
        ),
    "iphone" => array (
        "user_agent" => "Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A537a Safari/419.3",
        "language" => "en"
        ),
    "french" => array (
        "user_agent" => "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB6; .NET CLR 2.0.50727)",
        "language" => "fr,fr-FR;q=0.5"
        )
);

foreach ($urls as $url) {
    echo "[URL]: $url<br>";
    foreach ($browsers as $test_name => $browser) {
        //初始化curl
        $ch = curl_init();
        // 设置 url
        curl_setopt($ch, CURLOPT_URL, $url);
        // 设置浏览器的特定header
        //CURLOPT_HTTPHEADER: An array of HTTP header fields to set.
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                "User-Agent: {$browser['user_agent']}",
                "Accept-Language: {$browser['language']}"
            ));
        // 页面内容我们并不需要
        curl_setopt($ch, CURLOPT_NOBODY, 1);
        // 只需返回HTTP header
        curl_setopt($ch, CURLOPT_HEADER, 1);
        // 返回结果，而不是输出它
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        //执行curl操作
        $output = curl_exec($ch);
        curl_close($ch);
        // 有重定向的HTTP头信息吗?
        //preg_match() 返回 pattern 所匹配的次数。
        //要么是 0 次（没有匹配）或 1 次，因为 preg_match()
        // 在第一次匹配之后将停止搜索。preg_match_all() 则相反，会一直搜索到 subject 的结尾处。如果出错 preg_match() 返回 FALSE。


        if (preg_match("!Location: (.*)!", $output, $matches)) {
            echo "$test_name: redirects to $matches[1]\n";
        } else {
            echo "$test_name: no redirection\n";
        }
    }
    echo "<br><br>";
}