PHP regex - check if string contains a given value with certain count of random digits in the end

Question

I have few strings in an array:

$array = array('BE001 FIRST', 'BE01 SECOND', 'SV001 THIRD');

foreach ($array as $item) {
    // preg_match('', $item);
}

I would like to get an array element if it contains "BE" + 3 of any digits right after. In this case 1st array element.

I am not familiar to regex, but I saw examples how to match a given value, but not a given value with the certain count of random digits at the end. Please help me!

Answer 1

Use preg_grep:

$array = array('BE001 FIRST', 'BE01 SECOND', 'SV001 THIRD');
$res = preg_grep('/^BE\d{3}\b/', $array);
print_r($res);

Output:

Array
(
    [0] => BE001 FIRST
)