Hide pending/denied members from BuddyPress member directory.

my_pmpro_bp_approvals_directory_init.php

<?php

// Exclude pending and denied members from BuddyPress directory.
function my_pmpro_bp_bp_pre_user_query_construct( $query_array ) {
    
	// Only apply this to the directory.
	if ( 'members' != bp_current_component() ) {
		return;
	}
    
    // Only continue if PMPro Approvals is active.
    if ( ! class_exists( 'PMPro_Approvals' ) ) {
        return;
    }
    
    // Only continue if there are members to check.
    global $pmpro_bp_members_in_directory;
    if ( empty( $pmpro_bp_members_in_directory ) ) {
        return;
    }
    
    // Remove users who aren't approved.
    $exclude = array();
    foreach( $pmpro_bp_members_in_directory as $user_id ) {
        if ( ! PMPro_Approvals::isApproved( $user_id ) ) {
            $exclude[] = $user_id;
        }
    }
    
    $query_array->query_vars['exclude'] = $exclude;
}
add_action( 'bp_pre_user_query_construct', 'my_pmpro_bp_bp_pre_user_query_construct', 0 );