Automatically approve, previously approved members. [Paid Memberships Pro]

automatically-approve-previously-approved.php

<?php
/**
 * Automatically approve any previously approved member.
 * Requires the PMPro Approval Process for Membership Add On - https://www.paidmembershipspro.com/add-ons/approval-process-membership/
 * Add this code to your site following this guide - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function my_pmpro_automatically_approve_previously_approved( $level_id, $user_id, $cancelled_level ) {

	if ( ! class_exists( 'PMPro_Approvals' ) ) {
		return;
	}

	if ( ! PMPro_Approvals::requiresApproval( $level_id ) ) {
		return;
	}

	$prev_approved = get_user_meta( $user_id, 'pmpro_approval_log', true );

	if ( is_array( $prev_approved) && ! empty( $prev_approved ) ) {

		// Approve member if they have previously been approved.
		foreach( $prev_approved as $approval_string ) {
			if ( strpos( $approval_string, 'approved' ) !== false ) {
				// Let's approve the member
				PMPro_Approvals::approveMember( $user_id, $level_id, true );
				break;
			}
		}

	}	

}
add_action( 'pmpro_after_change_membership_level', 'my_pmpro_automatically_approve_previously_approved', 10, 3 );

Here is a new method how to automatically keep an approved member, approved - https://gist.github.com/ideadude/99714ad43279aac85f086fc0c0b703f4