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@ 2014-10-28T20:50:02Z

<?

$x = 'bobWEhh∆†ƒ∂';

echo preg_match('[0-9a-zA-Z]', $x);

echo preg_match('~[0-9a-zA-Z]~', $x);

echo preg_match('~[0-9a-zA-Z]+~', $x);
?>

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)

preferences:dark modelive preview

38.1 ms | 402 KiB | 5 Q