php - 如何确保日期采用以下格式：MM-DD-YY，包括破折号

Question

我想验证日期是否采用以下格式：MM-DD-YY（包括破折号）。我如何在 PHP（或 JavaScript）中做到这一点？

Answer 1

function validate_date($string) {
    $date = DateTime::createFromFormat('m-j-y', $string);
    if ($date === false) {
        return false;
    }
    $dateparts = explode('-', $string);
    if (!checkdate($dateparts[0], $dateparts[1], $dateparts[2])) {
        return false;
    }
    return true; // You can also make this return $date if you want to use it further
}

var_dump(validate_date('02-28-99')); // true
var_dump(validate_date('02-29-99')); // false

Answer 2

JS

function isValidDate(date)
{
    var matches = /^(\d{2})[-\/](\d{2})[-\/](\d{2})$/.exec(date);
    if (matches == null) return false;
    var d = matches[2];
    var m = matches[1] - 1;
    var y = matches[3];
    var composedDate = new Date(y, m, d);
    return composedDate.getDate() == d &&
            composedDate.getMonth() == m &&
            composedDate.getFullYear() == y;
}
console.log(isValidDate('10-12-61'));
console.log(isValidDate('12/11/61'));

Answer 3

代码：

$d = "02-05-20";

if(strlen($d) == 8 && checkdate($d[0].$d[1],$d[3].$d[4],$d[6].$d[7]))
{
    echo "Valid Date";
}

检查字符串格式是否正确以及日期本身是否有效。

• 02-05-20验证true
• 13-05-20验证false（没有第十三个月）
• 2-5-20验证false