x
<html><body>$str = "The rain in SPAIN falls mainly on the plains.";$pattern = "/ain/i";if(preg_match_all($pattern, $str, $matches)) { print_r($matches);}</body></html>Array
(
[0] => Array
(
[0] => ain
[1] => AIN
[2] => ain
[3] => ain
)
)