Message:

I want to get the value of the entered date from the datePicker in the current age field using PHP or Javascript in a PHP file.

    if ($key == 'currentage') {

                    $group[] = $this->form->createElement("text", $field, null, null);

                    $this->fieldNotRequired($field);

                } elseif ($key == 'dob') {

                    $group[] = $this->form->createElement("date", $field, null);

                    $this->fieldNotRequired($field);

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My Answer:
date of birth in a web page:

html

Age Calculator

Enter your date of birth:

Calculate Age

This code snippet creates a simple web page with an input field for the user to enter their date of birth. When the user clicks the "Calculate Age" button, the `calculateAge` function is called which calculates the age based on the entered date of birth and displays it on the web page.