PHP - detect whitespace between strings

Question

How would I go about detecting whitespace between strings? For example, I have a name string like:

"Jane Doe"

Keep in mind that I don't want to trim or replace it, just detect if whitespace exists between the first and second string.

Answer 1

Use preg_match as suggested by Josh:

<?php

$foo = 'Bob Williams';
$bar = 'SamSpade';
$baz = "Bob\t\t\tWilliams";

var_dump(preg_match('/\s/',$foo));
var_dump(preg_match('/\s/',$bar));
var_dump(preg_match('/\s/',$baz));

Ouputs:

int(1)
int(0)
int(1)