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

你想使用preg_grep :)

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

Answer 2

in_array(preg_match('/^pid\\|[0-9]+$/',$your_array),$your_array);

OR

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

if you need to check this particular element ie pid|100 then just use in_array('pid|100',$your_array) there is no need to check using regular expression

hope this will help you in solve your problem