i do not know how to search string with preg_grep function

Create an array “this a test”, search for “test” in this string using preg_grep function.

thank you :)

preg_grep :- This is a function dedicated for just searching elements that matches given regular expression. It will take a regular expression as first parameter, and an array as the second.

example :-

<?php
$demo = array (
'hi guys',
'hi silicon',
'hello india',
'siliconindia'
);

$matches = preg_grep ('/^hi (\w+)/i', $demo);

print_r($matches);
?>

Thanks