[SOLVED] Regex with a format of LyNNN lyNN LyNNN

[cooldude832]

I'm trying to make a regex test for something like  N is any integer

<?php
$string = "ly123"//or ly543 or ly1111 or ly12 or ly1 for examples
if($string = "lyNNN" || "lyN" || "lyNNNN" || lyNN"){
//do something
}
?>

[cooldude832]

I tried:

<?php
$re = "/ly[0-9]{1,4}/";
if (eregi($re,$afid)){
?>

but that is always true

[effigy]

preg_match('/\Aly\d{1,4}\z/', $string);

[cooldude832]

thanks works