Strings Php

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  4. B and B, equate to On a word boundary and Not on a word boundary, respectively
    $string = "this is a test!";
    if (preg_match("/oo\b/i", $string)) {
    }
    preg_match("/oo\B/i", $string);
    preg_match("/no\b/", "he said 'no!'");
    preg_match("/royalty\b/", "royalty-free photograph");
?>