http_build_query
(PHP 5) http_build_query — 生成 URL-encode 之后的请求字符串
<?php
$data = array('foo'=>'bar',
'baz'=>'boom',
'cow'=>'milk',
'php'=>'hypertext processor');?>
compact
array compact ( mixed
$varname [, mixed $... ] )(PHP 4, PHP 5) compact — 建立一个数组，包括变量名和它们的值
<?php
$city = "San Francisco";
$state = "CA";
$event = "SIGGRAPH";
$result = compact("city", "state", "event");
// array('city'=>'"San Francisco"','state'=>'CA','event' => "SIGGRAPH")
?> ————-
$qs=compact('province','city','name');
foreach($qs as $key => $value){
if(!$value){
unset($qs[$key]);
}
}
$url='something/search/?'.http_build_query($qs) ;
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