get_birthday_at_checkout.php

<?php

// Copy from below here...

/*
	Add birthday to user signup.
	
	For PayPal Express, uncomment line 58
*/

// add birthday fields.
function my_pmpro_birthday_checkout_after_email()
{
	$current_day = date("j");
	$current_month = date("M");	
	$current_year = date("Y");
?>
	<div>
		<label for="birthday_month">Birthday</label>
		<select name="birthday_month">
		<?php																
			for($i = 1; $i < 13; $i++)
			{
			?>
			<option value="<?php echo $i?>" <?php if(!empty($_REQUEST['birthday_month']) && $i == $_REQUEST['birthday_month']) { ?>selected="selected"<?php } ?>><?php echo date("M", strtotime($i . "/15/" . $current_year))?></option>
			<?php
			}
		?>
		</select>
		<input type="text" name="birthday_day" size="4" placeholder="day" value="<?php if(!empty($_REQUEST['birthday_day'])) echo intval($_REQUEST['birthday_day']);?>" />
		<input type="text" name="birthday_year" size="8" placeholder="year" value="<?php if(!empty($_REQUEST['birthday_year'])) echo intval($_REQUEST['birthday_year']);?>" />
		<small>month/dd/yyyy</small>
	</div>
<?php
}
add_action("pmpro_checkout_boxes", "my_pmpro_birthday_checkout_after_email");

//checking birthday
function my_pmpro_birthday_registration_checks($okay)
{
	if(!$okay)
		return $okay;		//there are other errors to handle
	
	global $pmpro_msg, $pmpro_msgt;	
	
	$birthday_month = intval($_REQUEST['birthday_month']);
	$birthday_day = intval($_REQUEST['birthday_day']);
	$birthday_year = intval($_REQUEST['birthday_year']);
	
	//make sure they entered any birthday
	if(empty($birthday_month) || empty($birthday_day) || empty($birthday_year))
	{
		$pmpro_msg = "Please enter a birthday.";
		$pmpro_msgt = "pmpro_error";
		return false;
	} else {
		// Un-comment line below for PayPal Express
		// $_SESSION['birthday'] = $birthday_year . "-" . $birthday_month . "-" . $birthday_day;
	}
	
	return $okay;
}
add_filter("pmpro_registration_checks", "my_pmpro_birthday_registration_checks");

//saving birthday
function my_pmpro_birthday_after_checkout($user_id)
{
	if( isset( $_SESSION['birthday'] ) ) {
		update_user_meta($user_id, "birthday", $_SESSION['birthday']);
	} else if(!empty($_REQUEST['birthday_month'])) {
		$birthday_month = intval($_REQUEST['birthday_month']);
		$birthday_day = intval($_REQUEST['birthday_day']);
		$birthday_year = intval($_REQUEST['birthday_year']);
		
		//save birthday
		$birthday = $birthday_year . "-" . $birthday_month . "-" . $birthday_day;
		update_user_meta($user_id, "birthday", $birthday);
	}
}
add_action("pmpro_after_checkout", "my_pmpro_birthday_after_checkout");

// Add birthday to members list
function my_pmpro_members_list_heading_birthday( $columns ) {
	$columns['birthday'] = 'Birthday';
	return $columns;
}
add_filter( 'pmpro_memberslist_extra_cols', 'my_pmpro_members_list_heading_birthday' );

function my_pmpro_members_list_user_birthday( $user ) {
	$birthday = get_user_meta( $user->ID, 'birthday', true );
	if ( ! empty( $birthday ) ) {
		$dateformatstring = get_option( 'date_format' );
		$user->birthday = date_i18n( $dateformatstring, strtotime( $birthday ) );
	} else {
		$user->birthday = '';
	}
	return $user;
}
add_filter( 'pmpro_members_list_user', 'my_pmpro_members_list_user_birthday' );