xiaoben-as2-php/lib/core/Number.php

<?php
/**
 * The Feeler framework, licensed under Mit license
 * Author: Rick Guo
 */

class Number{
	public static function truncateDecimal($number, $decimalDigits = -1){
		if(is_numeric($number) && is_int($decimalDigits)){
			$number = (float)$number;
		
			if($decimalDigits > 0){
				$tempDecimalDigits = $decimalDigits + 1;
				$number = substr(sprintf("%.{$tempDecimalDigits}f", $number), 0, -1);
			}
			else if($decimalDigits == 0){
				$number = (int)$number;
			}
		}
		
		return $number;
	}
	
	public static function isInt($number){
		return is_numeric($number) && !is_float($number) ? true : false;
	}
	
	public static function isFloat($number){
		return is_numeric($number) && !is_int($number) ? true : false;
	}
	
	public static function isNumeric($number){
		return is_numeric($number);
	}
}