X Geek - stuff you don’t know

<?php
 
/**
 * This class is singleton class for checking and returning valid boolean value
 * for use in AMFPHP (or other remoting services).
 *
 * For more info on this problem refer to: http://amfphp.org/docs/datatypes.html
 *
 * Use Example:
 * $stringBool = BoolUtil::getInstance()->getBool(false,true); //returns "false"
 * $stringBool = BoolUtil::getInstance()->getBool(true,true); //returns "true"
 * $stringBool = BoolUtil::getInstance()->getBool(0,true); //returns "false"
 * $stringBool = BoolUtil::getInstance()->getBool("off",true); //returns "false"
 * $stringBool = BoolUtil::getInstance()->getBool("True",true); //returns "true"
 *
 *
 * @author Marko Kecman <mkecman[at]gmail.com>
 */
class BoolUtil {
 
    /** Checks a variable to see if it should be considered a boolean true or false.
     *     Also takes into account some text-based representations of true of false,
     *     such as 'false','N','yes','on','off', etc.
     * @author Samuel Levy <sam+nospam@samuellevy.com>
     * @modified by Marko Kecman <mkecman[at]gmail.com>
     * @param mixed $value The variable to check
     * @param bool $strict If set to false, consider everything that is not false to be true.
     * @return string The string representation of boolean equivalent or null
     */
    function getBool($value, $strict=false)
    {
        $out = null;
        // if not strict, we only have to check if something is false
        if (in_array($in,array('false', 'False', 'FALSE', 'no', 'No', 'n', 'N', '0', 'off','Off', 'OFF', false, 0, null), true))
        {
            $out = "false";
        }
 
        if ($strict)
        {
            // if strict, check the equivalent true values
            if (in_array($value,array('true', 'True', 'TRUE', 'yes', 'Yes', 'y', 'Y', '1','on', 'On', 'ON', true, 1), true))
            {
                $out = "true";
            }
        }
        else
        {
            // not strict? let the regular php bool check figure it out (will largely default to true)
            $out = ( $value ? "true" : "false" );
        }
        return $out;
    }
 
    function &getInstance ()
    // this implements the 'singleton' design pattern.
    {
        static $instance;
 
        if (!isset($instance)) {
            $c = __CLASS__;
            $instance = new $c;
        } // if
 
        return $instance;
 
    } // getInstance
 
}
?>

 var test:Boolean = Boolean("false"); //returns true
var test:Boolean = Boolean("0"); //returns true
var test:Boolean = Boolean(""); //returns false

package org.xgeek.markokecman.business.util
{
	public class BoolUtil
	{
		public static function StringToBoolean ( value:String ) : Boolean
		{
			if ( value.toLowerCase() == "false" )
			{
				return false;
			}
			else
			if ( value.toLowerCase() == "true" )
			{
				return true;
			}
			else
			{
				return null;
			}
		}
 
	}
}