ngg_dlgallery_zip_pre_add

The NextGEN Download Gallery ngg dlgallery zip pre add hook.

Description

apply_filters( 'ngg_dlgallery_zip_pre_add', (string) $return_true ); 

Parameters (1)

0. $return_true (string) => '__return_true'
The return true.

Usage

To run the hook, copy the example below.
  1. $return_true = apply_filters( 'ngg_dlgallery_zip_pre_add', $return_true ); 
  2.  
  3. if ( !empty( $return_true ) ) { 
  4.  
  5. // everything has led up to this point... 
  6.  
  7.  
The following example is for adding a hook callback.
  1. // define the ngg_dlgallery_zip_pre_add callback 
  2. function filter_ngg_dlgallery_zip_pre_add( $return_true ) { 
  3. // make filter magic happen here... 
  4. return $return_true
  5. }; 
  6.  
  7. // add the filter 
  8. add_filter( 'ngg_dlgallery_zip_pre_add', 'filter_ngg_dlgallery_zip_pre_add', 10, 1 ); 
To remove a hook callback, use the example below.
  1. // remove the filter 
  2. remove_filter( 'ngg_dlgallery_zip_pre_add', 'filter_ngg_dlgallery_zip_pre_add', 10, 1 ); 

Defined (1)

The filter is defined in the following location(s).

/includes/class.NextGENDownloadGallery.php  
  1. $preAddCallback = apply_filters('ngg_dlgallery_zip_pre_add', '__return_true');