PHP checkdate() Function
Definition and Usage
The checkdate() function accepts the month, day, year of a date as parameters and, verifies whether it is a Gregorian date or not.
Syntax
checkdate ( int $month , int $day , int $year )
Parameters
| 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 Values
PHP checkdate() 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 in PHP Version 4, and works with all the later versions.
Example
Following example demonstrates the usage of the 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));
?>
This will produce following result −
bool(true)
bool(false)
1
result:
Example
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));
?>
This will produce following result −
bool(false)
bool(true)
bool(true)
bool(false)
Example
Following example 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");
}
?>
This will produce following result −
Given date is valid
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