mysql_to_rfc3339( string $date_string ): string
- Since
- 4.4.0
- Source
wp-includes/functions.php:7805
Description
Explicitly strips timezones, as datetimes are not saved with any timezone information. Including any information on the offset could be misleading.
Despite historical function name, the output does not conform to RFC3339 format, which must contain timezone.
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.
Parameters
$date_stringstring- Date string to parse and format.
Return value
string- Date formatted for ISO8601 without time zone.
Performance profile
How much work a call to mysql_to_rfc3339() 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
- 7
- Plugin surface
- None
- Called by
- 4
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 8.5. The body compiles to 7.
Nothing here hands control to plugin code.
4 places in core call this, so the cost is paid more often than your own code shows.
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 mysql_to_rfc3339() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 7 | mysql2date() |
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.
Uses · 1
- mysql2date()Converts given MySQL date string into a different format.
Used by · 4
- WP_REST_Comments_Controller::prepare_item_for_response()Prepares a single comment output for response.
- WP_REST_Posts_Controller::prepare_date_response()Checks the post_date_gmt or modified_gmt and prepare any post or modified date for single post output.
- WP_REST_Revisions_Controller::prepare_date_response()Checks the post_date_gmt or modified_gmt and prepare any post or modified date for single post output.
- WP_REST_Templates_Controller::prepare_item_for_response()Prepare a single template output for response
Source code
function mysql_to_rfc3339( $date_string ) { return mysql2date( 'Y-m-d\TH:i:s', $date_string, false );}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 6.8.8 tag, from
src/wp-includes/functions.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.