signup_get_available_languages(): string[]

Compatibility

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

Return value

string[]

Array of available language codes. Language codes are formed by stripping the .mo extension from the language file names.

Performance profile

How much work a call to signup_get_available_languages() 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

14

Executed per call on PHP 8.5. The body compiles to 14.

Plugin surface

1 hook

Third-party callbacks on 'signup_get_available_languages' run inside this call, and their cost is not bounded by anything here.

Called by

3

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

What it touches

• hookthird-party callbacksapply_filters()called directly

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 signup_get_available_languages() can have, taken from its control-flow graph on PHP 8.5.

Hooks and filters fired · 1

One hook fires while signup_get_available_languages() runs, in this order:

1. 1
   apply_filters( signup_get_available_languages )filterline 918 (+14 into the body)

   Filters the list of available languages for front-end site sign-ups.

Uses · 2

• apply_filters()Calls the callback functions that have been added to a filter hook.
• get_available_languages()Gets all available languages based on the presence of *.mo and *.l10n.php files in a given directory.

Used by · 3

• show_blog_form()Generates and displays the Sign-up and Create Site forms.
• validate_another_blog_signup()Validates a new site sign-up for an existing user.
• validate_blog_signup()Validates new site signup.

Source code

View on Trac ↗View on GitHub ↗

904function signup_get_available_languages() {905	/**906	 * Filters the list of available languages for front-end site sign-ups.907	 *908	 * Passing an empty array to this hook will disable output of the setting on the909	 * sign-up form, and the default language will be used when creating the site.910	 *911	 * Languages not already installed will be stripped.912	 *913	 * @since 4.4.0914	 *915	 * @param string[] $languages Array of available language codes. Language codes are formed by916	 *                            stripping the .mo extension from the language file names.917	 */918	$languages = (array) apply_filters( 'signup_get_available_languages', get_available_languages() );919 920	/*921	 * Strip any non-installed languages and return.922	 *923	 * Re-call get_available_languages() here in case a language pack was installed924	 * in a callback hooked to the 'signup_get_available_languages' filter before this point.925	 */926	return array_intersect_assoc( $languages, get_available_languages() );927}

Changelog

Introduced in 4.4.0. 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-signup.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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