Check if a string contains a certain number

Question

I have a string

8,7,13,14,16

Whats the easiest way to determine if a given number is present in that string?

$numberA = \"1         


        

Answer 1

A simple string search should do if you are just checking to find existence of the string. I dont speak php but i think this is how it could be done.

$mystring = '8,7,13,14,16';
$findme   = '13';

if (preg_match('/(?>(^|[^0-9])'.$findme.'([^0-9]|$))/', $mystring)) {
    $result = "Yeah, that number is in there";
} else {
    $result = "Sorry.";
}