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WP_REST_Revisions_Controller::prepare_date_response( string $date_gmt, string|null $date = null ): string|null

Since
4.7.0
Source
wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php:733
Checks the post_date_gmt or modified_gmt and prepare any post or modified date for single post output.

Compatibility

WordPress
since 4.7.0
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.

Parameters

$date_gmtstring
GMT publication time.
$datestring|nulloptional
Local publication time. Default null.Default: null

Return value

string|null
ISO8601/RFC3339 formatted datetime, otherwise null.

Performance profile

How much work a call to WP_REST_Revisions_Controller::prepare_date_response() 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
5–10

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 15.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
1

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

What one call costs · 2 distinct outcomes

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

WhenInstructionsCalls it makes
$date_gmt === "0000-00-00 00:00:00"5none
$date_gmt !== "0000-00-00 00:00:00"10mysql_to_rfc3339()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 15 instructions, 5–10 executed per call, 2 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.

Uses · 1

  • mysql_to_rfc3339()Parses and formats a MySQL datetime (Y-m-d H:i:s) for ISO8601 (Y-m-d\TH:i:s).

Used by · 1

Source code

View on Trac View on GitHub 

	protected function prepare_date_response( $date_gmt, $date = null ) {		if ( '0000-00-00 00:00:00' === $date_gmt ) {			return null;		} 		if ( isset( $date ) ) {			return mysql_to_rfc3339( $date );		} 		return mysql_to_rfc3339( $date_gmt );	}

Changelog

Introduced in 4.7.0. 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 7.0.4 tag, from src/wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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