按键过滤数组 [英] filter array by key
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问题描述
我有这个小功能可以通过键过滤数组:
I have this little function to filter my array by keys:
private function filterMyArray( )
{
function check( $v )
{
return $v['type'] == 'video';
}
return array_filter( $array, 'check' );
}
这很好用,但是由于我有更多要过滤的键,我在考虑一种从主要函数传递变量的方法: filterMyArray($ key_to_serch)
没有成功,我也尝试过使用全局变量,但似乎不起作用。
This works great but since I have more keys to filter, I was thinking in a way to pass a variable from the main function: filterMyArray($key_to_serch)
without success, also I've tried a global variable, but seems not work.
由于我的问题有些困惑:),我需要这样的东西:
Due some confusion in my question :), I need something like this:
private function filterMyArray( $key_to_serch )
{
function check( $v )
{
return $v['type'] == $key_to_serch;
}
return array_filter( $array, 'check' );
}
是否有通过该变量的想法?
Any idea to pass that variable?
推荐答案
这是 PHP 5.3 中的匿名函数派上用场的地方(请注意使用 use
):
This is where anonymous functions in PHP 5.3 come in handy (note the use of use
):
private function filterMyArray($key)
{
return array_filter(
$array,
function check($v) use($key) {
return $v['type'] == $key;
}
);
}
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