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WordPress

enqueue_embed_scripts()

Since
4.4.0
Source
wp-includes/embed.php:1057
Enqueues embed iframe default CSS and JS.

Description

Enqueue PNG fallback CSS for embed iframe for legacy versions of IE.

Allows plugins to queue scripts for the embed iframe end using wp_enqueue_script().
Runs first in oembed_head().

Compatibility

WordPress
since 4.4.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

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 enqueue_embed_scripts() 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
7

Executed per call on PHP 8.5. The body compiles to 7.

Plugin surface
1 hook

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

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

  • hookthird-party callbacksdo_action()called directly

Further down the call graph this can also reach query, option, 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 · 1 distinct outcome

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

WhenInstructionsCalls it makes
always7wp_enqueue_style(), do_action()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 7 instructions, 7 executed per call, 0 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.

Hooks and filters fired · 1

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

  1. do_action( enqueue_embed_scripts )actionline 1065 (+8 into the body)

    Fires when scripts and styles are enqueued for the embed iframe.

Uses · 2

Source code

View on Trac View on GitHub 

function enqueue_embed_scripts() {	wp_enqueue_style( 'wp-embed-template-ie' ); 	/**	 * Fires when scripts and styles are enqueued for the embed iframe.	 *	 * @since 4.4.0	 */	do_action( 'enqueue_embed_scripts' );}

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 6.8.8 tag, from src/wp-includes/embed.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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