Date Format Check Csharp Example

// date format check csharp example - JavaScript
const regex = /^\d{4}-\d{2}-\d{2}$/;

function validate(input) {
  if (!input || typeof input !== 'string') return false;
  return regex.test(input.trim());
}

// Usage examples
console.log(validate('2023-12-25')); // true
console.log(validate('2023-13-25')); // false

# date format check csharp example - Python
import re

pattern = r"^\d{4}-\d{2}-\d{2}$"
regex = re.compile(pattern)

def validate(input_str):
    if not input_str or not isinstance(input_str, str):
        return False
    return bool(regex.match(input_str.strip()))

# Usage examples
print(validate('2023-12-25'))  # True
print(validate('2023-13-25'))  # False

<?php
// date format check csharp example - PHP
function validate($input) {
    if (!is_string($input) || empty(trim($input))) {
        return false;
    }
    
    $pattern = '/^\d{4}-\d{2}-\d{2}$/';
    return preg_match($pattern, trim($input)) === 1;
}

// Usage examples
var_dump(validate('2023-12-25')); // bool(true)
var_dump(validate('2023-13-25')); // bool(false)
?>