AyeCode / invoicing

        $user_id = (int)$invoice->get_user_id();

        $current_user_id = (int)get_current_user_id();

        if ( $user_id > 0 && $user_id == $current_user_id && $invoice->needs_payment() ) {

            ?> 

            <a class="btn btn-success btn-sm" title="<?php esc_attr_e( 'Pay This Invoice', 'invoicing' ); ?>" href="<?php echo esc_url( $invoice->get_checkout_payment_url() ); ?>"><?php _e( 'Pay For Invoice', 'invoicing' ); ?></a>

            <?php

        }

    }

    do_action('wpinv_invoice_display_left_actions', $invoice);

}

        ?>

        <p class="wpi-meta-row wpi-resend-info"><?php echo $text['message']; ?></p>

        <p class="wpi-meta-row wpi-resend-email"><a title="<?php esc_attr_e( 'Send invoice to customer', 'invoicing' ); ?>" href="<?php echo esc_url( $email_url ); ?>" class="button button-secondary"><?php echo $text['button_text']; ?></a></p>

        <?php if ( wpinv_get_option( 'overdue_active' ) && $wpi_mb_invoice->needs_payment() && ( $due_date = $wpi_mb_invoice->get_due_date() ) ) { ?>

        <p class="wpi-meta-row wpi-send-reminder"><a title="<?php esc_attr_e( 'Send overdue reminder notification to customer', 'invoicing' ); ?>" href="<?php echo esc_url( $reminder_url ); ?>" class="button button-secondary"><?php esc_attr_e( 'Send Reminder', 'invoicing' ); ?></a></p>

        <?php } ?>

        <?php

        }