Online PHP editor | refs for Yvn8n

@ 2013-09-12T09:16:32Z

<?php
$strings = array('AbCd1zyZ9', 'abcd');
foreach ($strings as $testcase) {
    if (ctype_alnum($testcase)) {
        echo "The string $testcase consists of all letters or digits.\n";
    } else {
        echo "The string $testcase does not consist of all letters or digits.\n";
    }
}