install_plugin_information()

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 install_plugin_information() 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

Expensive

Reaches an outbound HTTP request via wp_remote_get().

Scaling

Scales with input

The body loops, so the work grows with how much data it finds.

Instructions

187–292

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 795.

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 callbacksapply_filters()one call below install_plugin_information()
• httpoutbound HTTP requestwp_remote_get()one call below install_plugin_information()
• optionoption read or writeget_option()one call below install_plugin_information()

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

What one call costs · 88 distinct outcomes

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

This body has more branch combinations than are worth enumerating, so the table covers the outcomes found first rather than every one that exists.

Uses · 35

• plugins_api()Retrieves plugin installer pages from the WordPress.org Plugins API.
• wp_unslash()Removes slashes from a string or recursively removes slashes from strings within an array.
• is_wp_error()Checks whether the given variable is a WordPress Error.
• wp_die()Kills WordPress execution and displays HTML page with an error message.
• _x()Retrieves translated string with gettext context.
• wp_kses()Filters text content and strips out disallowed HTML.
• esc_attr()Escaping for HTML attributes.
• iframe_header()Generic Iframe header for use with Thickbox.
• __()Retrieves the translation of $text.
• esc_url()Checks and cleans a URL.
• add_query_arg()Retrieves a modified URL query string.
• _e()Displays translated text.

Source code

View on Trac ↗View on GitHub ↗

519function install_plugin_information() {520	global $tab;521 522	if ( empty( $_REQUEST['plugin'] ) ) {523		return;524	}525 526	$api = plugins_api(527		'plugin_information',528		array(529			'slug' => wp_unslash( $_REQUEST['plugin'] ),530		)531	);532 533	if ( is_wp_error( $api ) ) {534		wp_die( $api );535	}536 537	$plugins_allowedtags = array(538		'a'          => array(539			'href'   => array(),540			'title'  => array(),541			'target' => array(),542		),543		'abbr'       => array( 'title' => array() ),544		'acronym'    => array( 'title' => array() ),545		'code'       => array(),546		'pre'        => array(),547		'em'         => array(),548		'strong'     => array(),549		'div'        => array( 'class' => array() ),550		'span'       => array( 'class' => array() ),551		'p'          => array(),552		'br'         => array(),553		'ul'         => array(),554		'ol'         => array(),555		'li'         => array(),556		'h1'         => array(),557		'h2'         => array(),558		'h3'         => array(),559		'h4'         => array(),560		'h5'         => array(),561		'h6'         => array(),562		'img'        => array(563			'src'   => array(),564			'class' => array(),565			'alt'   => array(),566		),567		'blockquote' => array( 'cite' => true ),568	);569 570	$plugins_section_titles = array(571		'description'  => _x( 'Description', 'Plugin installer section title' ),572		'installation' => _x( 'Installation', 'Plugin installer section title' ),573		'faq'          => _x( 'FAQ', 'Plugin installer section title' ),574		'screenshots'  => _x( 'Screenshots', 'Plugin installer section title' ),575		'changelog'    => _x( 'Changelog', 'Plugin installer section title' ),576		'reviews'      => _x( 'Reviews', 'Plugin installer section title' ),577		'other_notes'  => _x( 'Other Notes', 'Plugin installer section title' ),578	);579 580	// Sanitize HTML.581	foreach ( (array) $api->sections as $section_name => $content ) {582		$api->sections[ $section_name ] = wp_kses( $content, $plugins_allowedtags );583	}584 585	foreach ( array( 'version', 'author', 'requires', 'tested', 'homepage', 'downloaded', 'slug' ) as $key ) {586		if ( isset( $api->$key ) ) {587			$api->$key = wp_kses( $api->$key, $plugins_allowedtags );588		}589	}590 591	$_tab = esc_attr( $tab );592 593	// Default to the Description tab, Do not translate, API returns English.594	$section = isset( $_REQUEST['section'] ) ? wp_unslash( $_REQUEST['section'] ) : 'description';595	if ( empty( $section ) || ! isset( $api->sections[ $section ] ) ) {596		$section_titles = array_keys( (array) $api->sections );597		$section        = reset( $section_titles );598	}

Changelog

Introduced in 2.7.0. 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 7.0.4 tag, from src/wp-admin/includes/plugin-install.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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