WP_Script_Modules::get_src( string $id ): string

Description

Compatibility

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

Parameters

$idstring

The script module identifier.

Return value

string

The script module src with a version if relevant.

Performance profile

How much work a call to WP_Script_Modules::get_src() 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

5–34

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 45.

Plugin surface

1 hook

Third-party callbacks on 'script_module_loader_src' 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
• optionoption read or writeget_option()one call below WP_Script_Modules::get_src()

Further down the call graph this can also reach cache, serialize, query 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 · 4 distinct outcomes

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

Hooks and filters fired · 1

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

1. 1
   apply_filters( script_module_loader_src )filterline 995 (+24 into the body)

   Filters the script module source.

Uses · 3

• add_query_arg()Retrieves a modified URL query string.
• get_bloginfo()Retrieves information about the current site.
• apply_filters()Calls the callback functions that have been added to a filter hook.

Used by · 3

• WP_Script_Modules::get_import_map()Returns the import map array.
• WP_Script_Modules::print_script_module()Prints the enqueued script module using script tags with type="module" attributes.
• WP_Script_Modules::print_script_module_preloads()Prints the static dependencies of the enqueued script modules using link tags with rel="modulepreload" attributes.

Source code

View on Trac ↗View on GitHub ↗

971	private function get_src( string $id ): string {972		if ( ! isset( $this->registered[ $id ] ) ) {973			return '';974		}975 976		$script_module = $this->registered[ $id ];977		$src           = $script_module['src'];978 979		if ( '' !== $src ) {980			if ( false === $script_module['version'] ) {981				$src = add_query_arg( 'ver', get_bloginfo( 'version' ), $src );982			} elseif ( null !== $script_module['version'] ) {983				$src = add_query_arg( 'ver', $script_module['version'], $src );984			}985		}986 987		/**988		 * Filters the script module source.989		 *990		 * @since 6.5.0991		 *992		 * @param string $src Module source URL.993		 * @param string $id  Module identifier.994		 */995		$src = apply_filters( 'script_module_loader_src', $src, $id );996		if ( ! is_string( $src ) ) {997			$src = '';998		}999 1000		return $src;1001	}

Changelog

Introduced in 6.5.0. 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-includes/class-wp-script-modules.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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