Changes startdates that are retrieved for members. Useful for implementing custom content drip schedules when using the PMPro Series Add On.

my_pmpros_customize_series_delay.php

<?php

// Copy from below here...

/**
 * Changes startdates that are retrieved for members. Useful for implementing custom
 * content drip schedules when using the PMPro Series Add On.
 *
 * @param string $startdate in a timestamp format.
 * @param int $user_id to get startdate for.
 * @param int $level_id to get startdate for ('0' if not specified)
 * @return string
 */
function my_pmpros_customize_series_delay( $startdate, $user_id, $level_id ) {
	/*
	 * To have posts unlock at midnight each day...
	 */
	// $startdate = strtotime( 'today', $startdate );

	/*
	 * To have posts unlock at 10:00 each morning...
	 */
	// $startdate = strtotime( 'today 10:00', $startdate );

	/*
	 * To have posts unlock on a certain days of the week. Note that
	 * post delay should be set to the number of days past last Monday to unlock.
	 * For example, if you want posts to unock on fridays, their delays should be
	 * 0 (to give access immediately), 4, 11, 18, etc...
	 */
	// $startdate = strtotime( 'last Monday', $startdate );

	// or if you want to delay from next Monday...
	// $startdate = strtotime( 'next Monday', $startdate );

	/*
	 * To set a specific date for the post to unlock. Note that post
	 * delay should be set to the number of days past 2020/01/01
	 * that the post should unlock...
	 */
	// $startdate = strtotime( '2020-01-01 00:00:00');

	return strval( $startdate );
}
add_filter( 'pmpro_member_startdate', 'my_pmpros_customize_series_delay', 10, 3 );