wppaste
WordPress

wp_meta()

Since
1.5.0
Source
wp-includes/general-template.php:949
Theme container function for the 'wp_meta' action.

Description

The 'wp_meta' action can have several purposes, depending on how you use it, but one purpose might have been to allow for theme switching.

Compatibility

WordPress
since 1.5.0
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 wp_meta() 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
4

Executed per call on PHP 8.5. The body compiles to 4.

Plugin surface
1 hook

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

Called by
1

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

What it touches

  • hookthird-party callbacksdo_action()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 wp_meta() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always4do_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: 4 instructions, 4 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 wp_meta() runs, in this order:

  1. do_action( wp_meta )actionline 955 (+6 into the body)

    Fires before displaying echoed content in the sidebar.

Uses · 1

  • do_action()Calls the callback functions that have been added to an action hook.

Used by · 1

Source code

View on Trac View on GitHub 

function wp_meta() {	/**	 * Fires before displaying echoed content in the sidebar.	 *	 * @since 1.5.0	 */	do_action( 'wp_meta' );}

Changelog

Introduced in 1.5.0. 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/general-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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