PHP 使用 http_build_query() 构建查询参数
<无详细内容>
<?php
$vars = array('page' => 4, 'search' => 'this & that');
$qs = http_build_query($vars);
$url = 'http://www.oschina.net/search.php?' . $qs;
$page = file_get_contents($url);
?>
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