php | 通过正则表达式在数组中查找

Question

I'm looking the way to find one string in array of strings:

$array = ['string1'=>'custom', 'other string'=>'another', 'another'=>'again', 'custom'=>'pid|100', 'once again'=>'pid|'];

I need to find this element: pid|100;

String should containt: pid|any positive integer number

foreach($array as $value) { 
   // regular expression here
}

How can I found this value? Thanks!

Answer 1

You want to use preg_grep for this :)

print_r(preg_grep('/^pid\|[0-9]+$/',$array));