Does anyone have a sample PHP program that validates a date input in the format "YYYY-MM-DD" using regular expressions?

Hey there,

I had a similar requirement in one of my projects a while ago, and I found a solution using regular expressions. Here's a sample PHP program that might be helpful to you:

php
$date = "2021-12-31"; // Sample date input



$pattern = "/^\d{4}-\d{2}-\d{2}$/"; // Regular expression pattern



if (preg_match($pattern, $date)) {

    echo "Valid date format!";

} else {

    echo "Invalid date format!";

}

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Hey everyone,

I recently encountered a similar issue in one of my PHP projects, and I thought I'd share my solution with you. When validating a date input in the "YYYY-MM-DD" format using regular expressions, I found the following code snippet to be quite effective:

php
$date = "2021-12-31"; // Sample date input



$pattern = "/\b(19|20)\d\d-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])\b/"; // Regular expression pattern



if (preg_match($pattern, $date)) {

    echo "The date format is valid!";

} else {

    echo "Oops, the date format is not valid!";

}

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