Validate Date (YYYY-MM-DD)
Easy
PHP
PHP Error Handling
32 views
Problem Statement
If date is valid (YYYY-MM-DD), print OK else INVALID_DATE.
Input Format
One token date.
Output Format
OK or INVALID_DATE.
Example
2024-02-29
OK
Constraints
1900-01-01
Input / Output Format
Input Format
One token date.
Output Format
OK or INVALID_DATE.
Constraints
1900-01-01
Examples
Input:
2024-02-29
Output:
OK
Example Solution (Public)
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$parts=explode('-',$inputText);
if(count($parts)!==3){ echo 'INVALID_DATE'; exit; }
$y=intval($parts[0]); $m=intval($parts[1]); $d=intval($parts[2]);
if(checkdate($m,$d,$y)) echo 'OK'; else echo 'INVALID_DATE';
?>
Official Solution Code
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$parts=explode('-',$inputText);
if(count($parts)!==3){ echo 'INVALID_DATE'; exit; }
$y=intval($parts[0]); $m=intval($parts[1]); $d=intval($parts[2]);
if(checkdate($m,$d,$y)) echo 'OK'; else echo 'INVALID_DATE';
?>
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