Re: 'false' - boolean interpratation

Robert Janeczek wrote:

is there any way that string 'false' (and its variations with capital letters) could be interpeted as boolean of value false? i have xml configuration file that has some switches (true/false) in it. when i use this values in functions that require booleans i get true every time (as string isn`t empty) :/ i hoped that at least with explicit type cast i could go around this problem, but i didn`t help. how about adding this special case to conversion rules? creating if`s around such code doesn`t make me happy at all :]

IMO better as userland function/method (this is extract from a Phing class):

    ...
    private static $TRUE_VALUES = array("on", "true", "t", "yes");
    ...

    public function booleanValue($s) {
        if (is_bool($s)) {
            return $s; // it's already boolean (not a string)
        }
        // otherwise assume it's something like "true" or "t"
        $trimmed = strtolower(trim($s));
        return in_array($trimmed, self::$TRUE_VALUES);
    }

Hans