Answers for "php find pattern in 2 dimensional array"

PHP multidimensional array search by value

$key = array_search('100', array_column($userdb, 'uid'));

array search multidimensional php

function find_customer_mobile($customers, $mobile) {
    foreach($customers as $index => $cust) {
        if($cust['mobile'] == $mobile) return $index;
    }
    return FALSE;
}