php之parse_url 、parse_str 、http_build_query

<?php

$url = "http://www.baidu.com:8090/search/news";
$parts = parse_url($url);

//Array ( [scheme] => http [host] => www.baidu.com [port] => 8090 [path] => /search/news )
print_r($parts);

echo '<hr>';
$url = 'http://username:password@hao123.com:8080/news/hot?page=1&size=10#anchor';
//Array ( [scheme] => http [host] => hao123.com [port] => 8080 [user] => username [pass] => password [path] => /news/hot [query] => page=1&size=10 [fragment] => anchor )
print_r(parse_url($url));

echo '<hr>';
echo parse_url($url, PHP_URL_PATH);
echo '<hr>';
echo parse_url($url, PHP_URL_QUERY);
echo '<hr>';
echo parse_url($url, PHP_URL_SCHEME);

echo '<hr>';

$parse = parse_url($url);
parse_str($parse['query'], $params);
// page=1&size=10   转换成：Array ( [page] => 1 [size] => 10 )
print_r($params);

echo '<hr>';
$bq = http_build_query($params);
echo $bq;