upgrader_pre_install

The WordPress Core upgrader pre install hook.

Description

add_filter( 'upgrader_pre_install', (callback) $array, (int) $int, (int) $int ); 

Parameters (3)

0. $array (callback) => array($this, 'deactivate_plugin_before_upgrade')
The array.
1. $int (int) => 10
The int.
2. $int (int) => 2
The int.

Usage

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

Defined (7)

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

/wp-admin/includes/class-plugin-upgrader.php  
  1. add_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'), 10, 2); 
  1. remove_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade')); 
/wp-admin/includes/class-theme-upgrader.php  
  1. add_filter('upgrader_pre_install', array($this, 'current_before'), 10, 2); 
  1. remove_filter('upgrader_pre_install', array($this, 'current_before')); 
  1. add_filter('upgrader_pre_install', array($this, 'current_before'), 10, 2); 
  1. remove_filter('upgrader_pre_install', array($this, 'current_before')); 
/wp-admin/includes/class-wp-upgrader.php  
  1. $res = apply_filters( 'upgrader_pre_install', true, $args['hook_extra'] );