In the provided PHP code, what are some common mistakes or errors that could lead to the "You have entered wrong Dates!" message being displayed incorrectly?

One common mistake that could lead to the "You have entered wrong Dates!" message being displayed incorrectly is not properly validating the input dates before comparing them. To solve this issue, you should validate the input dates to ensure they are in the correct format and are valid dates before comparing them. 

// Validate the input dates before comparing them
$date1 = $_POST['date1'];
$date2 = $_POST['date2'];

if (strtotime($date1) === false || strtotime($date2) === false) {
    echo "Invalid date format. Please enter dates in the correct format.";
} else {
    // Compare the dates
    if ($date1 > $date2) {
        echo "Date 1 is greater than Date 2.";
    } elseif ($date1 < $date2) {
        echo "Date 1 is less than Date 2.";
    } else {
        echo "Date 1 is equal to Date 2.";
    }
}

Keywords

PHP date validation error handling conditional statements string comparison

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