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PHP alpha-numeric characters validator

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9

PHP alpha-numeric characters validator

Added by tamos on May-22-2007, 5:17 pm

Validates a given string against alpha-numeric characters. Returns TRUE or FALSE

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function alpha_numeric($str)
{
	return ( ! preg_match("/^([-a-z0-9])+$/i", $str)) ? FALSE : TRUE;
}

Comments

scragar says:preg_replace is slow and clunky, replace that function with the following SIGNIFICANTLY faster version: function alpha_numeric($str){ return (strspn($str, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") == strlen($str)); }
2007-11-05 | 09:00 am

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PHP numeric characters validator

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