note 102539 deleted from function.checkdate by danbrown

Note Submitter: waldemar dot axdorph at gmail dot com 

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amcanadian1973's script will not handle dates like 2011-02-30 i.e. false dates. This is because strtotime will convert 2011-02-30 to 2011-03-02. The script then handles the date 2011-03-02 and not the given date (2011-02-30). This is my take on it.

Please observe that this script only handles the YYYY-MM-DD format.

<?php
/*

var_dump( is_date('2011-02-20') ); // today => bool(true)
var_dump( is_date('2011-02-30') ); // non-existent => bool(false)
var_dump( is_date('2012-02-29') ); // leap day => bool(true)
var_dump( is_date('2011-2-22') ); // malformed => bool(false)
var_dump( is_date('YYYY-MM-DD') ); // characters => bool(false)

*/
		function is_date( $str, $delimiter = '-' ) 
		{
			$str = trim($str);
			
			if(strlen($str) != 10) // strlen('YYYY-MM-DD') == 10
			{
				return false;
			}
			
			$stamp = strtotime( $str ); //ok for first defense
			
			if ( !is_numeric( $stamp ) ) 
			{
				return false; 
			}
			
			$dateParts = explode( $delimiter, $str );//explode the date by its delimiter
			$year = $dateParts[0];
			$month = $dateParts[1];
			$day = $dateParts[2];
					  
			if (checkdate( $month, $day, $year )) 
			{
				return true; 
			}
			
			return false; 
		}

?>