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WordPress

register_deactivation_hook( string $file, callable $callback )

Since
2.0.0
Source
wp-includes/plugin.php:903
Sets the deactivation hook for a plugin.

Description

When a plugin is deactivated, the action 'deactivate_PLUGINNAME' hook is called. In the name of this hook, PLUGINNAME is replaced with the name of the plugin, including the optional subdirectory. For example, when the plugin is located in wp-content/plugins/sampleplugin/sample.php, then the name of this hook will become 'deactivate_sampleplugin/sample.php'.

When the plugin consists of only one file and is (as by default) located at wp-content/plugins/sample.php the name of this hook will be 'deactivate_sample.php'.

Compatibility

WordPress
since 2.0.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$filestring
The filename of the plugin including the path.
$callbackcallable
The function hooked to the 'deactivate_PLUGIN' action.

Performance profile

How much work a call to register_deactivation_hook() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class
Trivial

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
12

Executed per call on PHP 8.5. The body compiles to 12.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What one call costs · 1 distinct outcome

One number would be a lie: the work depends on which branch runs. These are every distinct cost register_deactivation_hook() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always12plugin_basename(), add_action()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 12 instructions, 12 executed per call, 0 branches. The work does not change between versions.

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Uses · 2

Source code

View on Trac View on GitHub 

function register_deactivation_hook( $file, $callback ) {	$file = plugin_basename( $file );	add_action( 'deactivate_' . $file, $callback );}

Changelog

Introduced in 2.0.0. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/plugin.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
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