Get location using curl: Redirect URL

In PHP to get HTTP header information, PHP has a function get_headers (), I used to use this, I heard that efficiency in win, plus the recent research Baidu URL no fruit, wrote curl get redirect URL php code to toss.
I used to use get_headers to get the URL after the jump.

Get_headers's Code

1234567891011

//curl的百度百科$url = ‘http://www.baidu.com/link?url=77I2GJqjJ4zBBpC8yDF8xDhiqDSn1JZjFWsHhEoSNd85PkV8Xil-rckpQ8_kjGKNNq‘;$header = get_headers($url,1);if (strpos($header[0],‘301‘) || strpos($header[0],‘302‘)) {    if(is_array($header[‘Location‘])) {        $info = $header[‘Location‘][count($header[‘Location‘])-1];    }else{        $info = $header[‘Location‘];    }}echo $info;

Now use curl to rewrite the code again.
Curl is required to set curl_setopt and Curl_getinfo to get location: redirect

123456789101112131415

//curl的百度百科$url = ‘http://www.baidu.com/link?url=77I2GJqjJ4zBBpC8yDF8xDhiqDSn1JZjFWsHhEoSNd85PkV8Xil-rckpQ8_kjGKNNq‘;$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);// 不需要页面内容curl_setopt($ch, CURLOPT_NOBODY, 1);// 不直接输出curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);// 返回最后的Locationcurl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);curl_exec($ch);$info = curl_getinfo($ch,CURLINFO_EFFECTIVE_URL);curl_close($ch);echo ‘真实url为：‘.$info;

Because it is also related to the speed of the two code efficiency I have not tested. I use get_headers local test is possible, but upload to server execution error, do not know why?

End ....

Source: http://enenba.com/?post=252

php gets the redirect URL in several ways: http://blog.sina.com.cn/s/blog_5b1acf750102v6iw.html

Get location using curl: Redirect URL