wp_ajax_delete_plugin()

Compatibility

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

Performance profile

How much work a call to wp_ajax_delete_plugin() 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

Moderate

Reads stored settings via get_option(), cached per request but not free on a cold cache.

Scaling

Constant

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

Instructions

94–158

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 166.

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 it touches

• hookthird-party callbacksdo_action()one call below wp_ajax_delete_plugin()
• optionoption read or writeget_option()one call below wp_ajax_delete_plugin()
• transienttransientget_site_transient()one call below wp_ajax_delete_plugin()

Further down the call graph this can also reach cache, serialize and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 324 distinct outcomes

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

Uses · 18

• check_ajax_referer()Verifies the Ajax request to prevent processing requests external of the blog.
• wp_send_json_error()Sends a JSON response back to an Ajax request, indicating failure.
• __()Retrieves the translation of $text.
• plugin_basename()Gets the basename of a plugin.
• sanitize_text_field()Sanitizes a string from user input or from the database.
• wp_unslash()Removes slashes from a string or recursively removes slashes from strings within an array.
• sanitize_key()Sanitizes a string key.
• current_user_can()Returns whether the current user has the specified capability.
• validate_file()Validates a file name and path against an allowed set of rules.
• get_plugin_data()Parses the plugin contents to retrieve plugin's metadata.
• is_plugin_active()Determines whether a plugin is active.
• wp_nonce_url()Retrieves URL with nonce added to URL query.

Source code

View on Trac ↗View on GitHub ↗

4753function wp_ajax_delete_plugin() {4754	check_ajax_referer( 'updates' );4755 4756	if ( empty( $_POST['slug'] ) || empty( $_POST['plugin'] ) ) {4757		wp_send_json_error(4758			array(4759				'slug'         => '',4760				'errorCode'    => 'no_plugin_specified',4761				'errorMessage' => __( 'No plugin specified.' ),4762			)4763		);4764	}4765 4766	$plugin = plugin_basename( sanitize_text_field( wp_unslash( $_POST['plugin'] ) ) );4767 4768	$status = array(4769		'delete' => 'plugin',4770		'slug'   => sanitize_key( wp_unslash( $_POST['slug'] ) ),4771	);4772 4773	if ( ! current_user_can( 'delete_plugins' ) || 0 !== validate_file( $plugin ) ) {4774		$status['errorMessage'] = __( 'Sorry, you are not allowed to delete plugins for this site.' );4775		wp_send_json_error( $status );4776	}4777 4778	$plugin_data          = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );4779	$status['plugin']     = $plugin;4780	$status['pluginName'] = $plugin_data['Name'];4781 4782	if ( is_plugin_active( $plugin ) ) {4783		$status['errorMessage'] = __( 'You cannot delete a plugin while it is active on the main site.' );4784		wp_send_json_error( $status );4785	}4786 4787	// Check filesystem credentials. `delete_plugins()` will bail otherwise.4788	$url = wp_nonce_url( 'plugins.php?action=delete-selected&verify-delete=1&checked[]=' . $plugin, 'bulk-plugins' );4789 4790	ob_start();4791	$credentials = request_filesystem_credentials( $url );4792	ob_end_clean();4793 4794	if ( false === $credentials || ! WP_Filesystem( $credentials ) ) {4795		global $wp_filesystem;4796 4797		$status['errorCode']    = 'unable_to_connect_to_filesystem';4798		$status['errorMessage'] = __( 'Unable to connect to the filesystem. Please confirm your credentials.' );4799 4800		// Pass through the error from WP_Filesystem if one was raised.4801		if ( $wp_filesystem instanceof WP_Filesystem_Base && is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {4802			$status['errorMessage'] = esc_html( $wp_filesystem->errors->get_error_message() );4803		}4804 4805		wp_send_json_error( $status );4806	}4807 4808	$result = delete_plugins( array( $plugin ) );4809 4810	if ( is_wp_error( $result ) ) {4811		$status['errorMessage'] = $result->get_error_message();4812		wp_send_json_error( $status );4813	} elseif ( false === $result ) {4814		$status['errorMessage'] = __( 'Plugin could not be deleted.' );4815		wp_send_json_error( $status );4816	}4817 4818	wp_send_json_success( $status );4819}

Changelog

Introduced in 4.6.0. 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-admin/includes/ajax-actions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.