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WordPress

WP_Recovery_Mode::get_extension_for_error( array $error ): array|false

Since
5.2.0
Source
wp-includes/class-wp-recovery-mode.php:351
Gets the extension that the error occurred in.

Compatibility

WordPress
since 5.2.0
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

$errorarray
Error details from error_get_last().

Return value

array|false
Extension details.
  • $slugstring

    The extension slug. This is the plugin or theme's directory.
  • $typestring

    The extension type. Either 'plugin' or 'theme'.

Performance profile

How much work a call to WP_Recovery_Mode::get_extension_for_error() 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
Light

Touches nothing outside its own arguments.

Scaling
Scales with input

The body loops, so the work grows with what you pass in.

Instructions
5–42

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 59.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
2

2 places in core call this, so the cost is paid more often than your own code shows.

What one call costs · 4 distinct outcomes

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

WhenInstructionsCalls it makes
always5–7none
isset($error) && defined('WP_PLUGIN_DIR') && !$error_file22–25wp_normalize_path(), wp_normalize_path()
isset($error) && defined('WP_PLUGIN_DIR') && $error_file31wp_normalize_path(), wp_normalize_path(), explode()
isset($error) && defined('WP_PLUGIN_DIR') && !empty($wp_theme_directories) && !$wp_theme_directories42wp_normalize_path(), wp_normalize_path(), wp_normalize_path(), explode()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev595–427
8.5595–427
8.4595–42714 fewer instructions than PHP 8.3
8.3735–527
8.2735–527
8.1735–527
7.4735–527

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

Used by · 2

Source code

	protected function get_extension_for_error( $error ) {		global $wp_theme_directories; 		if ( ! isset( $error['file'] ) ) {			return false;		} 		if ( ! defined( 'WP_PLUGIN_DIR' ) ) {			return false;		} 		$error_file    = wp_normalize_path( $error['file'] );		$wp_plugin_dir = wp_normalize_path( WP_PLUGIN_DIR ); 		if ( str_starts_with( $error_file, $wp_plugin_dir ) ) {			$path  = str_replace( $wp_plugin_dir . '/', '', $error_file );			$parts = explode( '/', $path ); 			return array(				'type' => 'plugin',				'slug' => $parts[0],			);		} 		if ( empty( $wp_theme_directories ) ) {			return false;		} 		foreach ( $wp_theme_directories as $theme_directory ) {			$theme_directory = wp_normalize_path( $theme_directory ); 			if ( str_starts_with( $error_file, $theme_directory ) ) {				$path  = str_replace( $theme_directory . '/', '', $error_file );				$parts = explode( '/', $path ); 				return array(					'type' => 'theme',					'slug' => $parts[0],				);			}		} 		return false;	}

Changelog

Introduced in 5.2.0. 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 6.9.7 tag, from src/wp-includes/class-wp-recovery-mode.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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