I’m getting a string from a $_GET and I want to test if it could be a boolean, before I use it for a part of a mysql query. Is there a better way of doing it than:
function checkBool($string){ $string = strtolower($string); if ($string == "true" || $string == "false" || $string == "1" || $string == "0"){ return true; } else { return false; } } if (checkBool($_GET['male'])){ $result = mysql_query( "SELECT * FROM my_table " . "WHERE male='".$_GET['male']."'") or die(mysql_error()); }
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Answer
There’s, by the way, a cleaner way of writing it:
function checkBool($string){ $string = strtolower($string); return (in_array($string, array("true", "false", "1", "0", "yes", "no"), true)); }
But yes. The one you wrote down is the only way.