[Funzioni] Estrarre stringa da stringa con numeri

[andr3a]

$nums = Array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 );
$myString = (string) 'a1238j923d89j2d9j29j8293d8998';
echo str_replace( $nums, '', $myString );