PHP | checkdate() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP checkdate() Function.

The PHP checkdate() function accepts the month, day & year of a date as parameters and, verifies whether it is Gregorian date or not.

Syntax

Following below is the syntax to use this function -

checkdate ( int $month , int $day , int $year )

READ: PHP Array Function

Parameter Details

Sr.No	Parameter & Description
1	month This is an integer value representing the month of a date, it must be between between 1 and 12.
2	day This is an integer value representing the day of a date, it must be below the allowed number of days in the given month.
3	year This is an integer value representing the year of a date, it must be between between 1 and 32767.

Return Value

This built-in PHP function returns a boolean value. This value is TRUE if the given date is valid and, FALSE if it is invalid.

PHP Version

This function was first introduced as part of core PHP version 4, and works with all the later versions.

Example1

Following example below shows the usage of the PHP checkDate() function -

<?php
   var_dump(checkdate(11, 07, 1989));
   var_dump(checkdate(02, 31, 2008));
   
   $bool = (checkdate(06, 03, 1889));
   print($bool);
   print("\n");
   print("result: ".checkdate(13, 30, 2005));
?>

Output

When the above code is executed, it will produce the following result -

bool(true)
bool(false)
1
result:

Example2

In this example, we are trying to verify the dates of leap year(s) -

<?php
   var_dump(checkdate(02, 30, 2004));
   var_dump(checkdate(02, 28, 2008));   
   var_dump(checkdate(05, 31, 2020));
   var_dump(checkdate(06, 31, 2020));
?>

Output

When the above code is executed, it will produce the following result -

bool(false)
bool(true)
bool(true)
bool(false)

Example 3

Following example below verifies whether the date 12/12/2005 is Gregorian, or not -

<?php
   $bool = checkdate(12, 12, 2005);
   
   if($bool){
      print("Given date is valid");
   }else{
      print("Given date is invalid");
   }
?>

Output

When the above code is executed, it will produce the following result -

Given date is valid

READ: PHP | Date and Time Functions

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP date_create() Function.

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