搜索关键字返回键的数组

Question

I've done some searching and have found similar questions but most of them have string keys and not numerical. Basically this is what I would like to achieve:

Sample Array

 Array (
      [0] => comments=DISABLED
      [1] => img_carousel=red.jpg,yellow.png,blue.jpg
      [2] => twitter=http://www.twitter.com
 )

Running something like this:

 $img_carousel = explode('=', $arr[array_search('img_carousel', $arr)]);

will return:

 Array (
      [0] => img_carousel
      [1] => red.jpg,yellow.png,blue.jpg
 )

However, it does not and only returns 0/FALSE. I'm guessing it is because array_search searches for an exact match and not for a keyword within a string?

I tried to use preg_grep, unfortunately, I just can't seem to understand regex and searching for a literal string has proven to be too difficult for me... :{

Answer 1

You want something like this:

$img_carousel = explode('=', array_shift(preg_grep('/img_carousel=/', $arr)))