Array search in php

 Search string in array functionality.
array search

<?php
$array_value = array (
array ( 'id' => 2, 'name' => 'Sammy'),
array ( 'id' => 3, 'name' => 'ram'),
array ( 'id' => 4, 'name' => 'sam'),
array ( 'id' => 2, 'name' => 'sammer')
);
$index_array = array_keys( array_filter( $array,function ( $x ) { return preg_match('/^D.*$/',$x['name']); } ));
var_dump($index_array);
?>

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