wp_oembed_add_host_js()
- Since
- 4.4.0
- Source
wp-includes/embed.php:387
Description
This function is no longer used directly. For back-compat it exists exclusively as a way to indicate that the oEmbed host JS should be added. In default-filters.php there remains this code:
add_action( 'wp_head', 'wp_oembed_add_host_js' )Historically a site has been able to disable adding the oEmbed host script by doing:
remove_action( 'wp_head', 'wp_oembed_add_host_js' )In order to ensure that such code still works as expected, this function remains. There is now a has_action() check in wp_maybe_enqueue_oembed_host_js() to see if wp_oembed_add_host_js() has not been unhooked from running at the wp_head action.
Performance profile
How much work a call to wp_oembed_add_host_js() 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
- 1
- Plugin surface
- None
- Called by
- 0
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. The body compiles to 1.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
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 wp_oembed_add_host_js() can have, taken from its control-flow graph on PHP 8.4.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 1 | none |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3 and 8.4: 1 instruction, 1 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.
Source code
function wp_oembed_add_host_js() {}Changelog
Introduced in 4.4.0. 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 6.9.7 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
- Something wrong on this page? Report it and it gets fixed in the next regeneration.