Filter uncanny-automator-pro

learndash_tcpdf_legacy_ld322

Filters the arguments used for generating older LearnDash 3.2.2 certificate PDF documents.

add_filter( 'learndash_tcpdf_legacy_ld322', $callback, 10, 1 );

Description

This filter hook controls the legacy LearnDash 3.2.2 TCPDF compatibility. Developers can use it to conditionally disable this older PDF generation method by returning `false`. This is primarily for internal use and advanced troubleshooting.

Usage

add_filter( 'learndash_tcpdf_legacy_ld322', 'your_function_name', 10, 1 );

Parameters

$cert_args (mixed)
This parameter determines whether to enable legacy LearnDash 3.2.2 PDF generation functions.

Return Value

The filtered value.

Examples

/**
 * Example of how to use the learndash_tcpdf_legacy_ld322 filter.
 *
 * This filter allows you to conditionally enable or disable a legacy
 * PDF generation method for LearnDash certificates based on certain criteria.
 * For instance, you might want to disable it for older certificates
 * or for specific user roles.
 */
add_filter( 'learndash_tcpdf_legacy_ld322', 'my_learndash_disable_legacy_tcpdf', 10, 2 );

/**
 * Custom function to conditionally disable the legacy LD322 TCPDF method.
 *
 * @param bool   $use_legacy_ld322  The current value of the legacy flag (default is true).
 * @param array  $cert_args         An array of arguments related to the certificate generation.
 * @return bool                     Returns false to disable the legacy method, true to keep it enabled.
 */
function my_learndash_disable_legacy_tcpdf( $use_legacy_ld322, $cert_args ) {
    // Example: Disable the legacy method if the certificate post ID is '123'.
    if ( isset( $cert_args['cert_post']->ID ) && $cert_args['cert_post']->ID === 123 ) {
        return false; // Disable legacy method
    }

    // Example: Disable the legacy method if a specific query parameter is set.
    if ( isset( $_GET['disable_legacy_pdf'] ) && $_GET['disable_pdf'] === 'yes' ) {
        return false; // Disable legacy method
    }

    // Otherwise, keep the default behavior.
    return $use_legacy_ld322;
}

Placement

This code should be placed in the functions.php file of your active theme, a custom plugin, or using a code snippets plugin.

Source Code

uncanny-automator-pro/src/integrations/learndash/helpers/learndash-pro-helpers.php:811

$footer_enable = $_GET['footer'];
		}

		/**
		 * Start Cert post content processing.
		 */
		if ( ! defined( 'LEARNDASH_TCPDF_LEGACY_LD322' ) ) {
			$use_LD322_define = apply_filters( 'learndash_tcpdf_legacy_ld322', true, $cert_args );
			define( 'LEARNDASH_TCPDF_LEGACY_LD322', $use_LD322_define );
		}

		$cert_content = ! empty( $body ) ? html_entity_decode( $body ) : $cert_args['cert_post']->post_content;

		// Delete shortcode for POST2PDF Converter
		$cert_content = preg_replace( '|[pdf[^]]*?].*?[/pdf]|i', '', $cert_content );
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