wp_can_install_language_pack(): bool
- Since
- 4.0.0
- Source
wp-admin/includes/translation-install.php:302
Return value
bool- Returns true on success, false on failure.
Performance profile
How much work a call to wp_can_install_language_pack() 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
- Scaling
- Constant
- Instructions
- 5–30
- Plugin surface
- None
- Called by
- 1
Touches nothing outside its own arguments.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.4, depending on the branch taken. The body compiles to 32.
Nothing here hands control to plugin code.
1 place in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()one call below wp_can_install_language_pack()
What one call costs · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_can_install_language_pack() can have, taken from its control-flow graph on PHP 8.4.
| When | Instructions | Calls it makes |
|---|---|---|
!wp_is_file_mod_allowed() | 5 | wp_is_file_mod_allowed() |
wp_is_file_mod_allowed() | 26 | wp_is_file_mod_allowed(), ->init() |
wp_is_file_mod_allowed() | 30 | wp_is_file_mod_allowed(), ->init(), is_wp_error() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3 and 8.4: 32 instructions, 5–30 executed per call, 3 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 · 4
- wp_is_file_mod_allowed()Determines whether file modifications are allowed.
- is_wp_error()Checks whether the given variable is a WordPress Error.
- Automatic_Upgrader_Skin::__construct()
- Language_Pack_Upgrader::__construct()
Used by · 1
- edit_user()Edit user settings based on contents of $_POST
Source code
function wp_can_install_language_pack() { if ( ! wp_is_file_mod_allowed( 'can_install_language_pack' ) ) { return false; } require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; $skin = new Automatic_Upgrader_Skin(); $upgrader = new Language_Pack_Upgrader( $skin ); $upgrader->init(); $check = $upgrader->fs_connect( array( WP_CONTENT_DIR, WP_LANG_DIR ) ); if ( ! $check || is_wp_error( $check ) ) { return false; } return true;}Changelog
Introduced in 4.0.0. Unchanged from 6.7.7 through 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/translation-install.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.