twentyfifteen_upgrade_notice()
- Since
- Twenty Fifteen 1.0
- Source
wp-content/themes/twentyfifteen/inc/back-compat.php:38
Description
Prints an update nag after an unsuccessful attempt to switch to Twenty Fifteen on WordPress versions prior to 4.1.
Compatibility
- WordPress
- since Twenty Fifteen 1.0
- 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 twentyfifteen_upgrade_notice() 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
- 14
- 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 8.5. The body compiles to 14.
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 twentyfifteen_upgrade_notice() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 14 | __(), sprintf(), printf() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 14 | 14 | 0 | |
| 8.5 | 14 | 14 | 0 | |
| 8.4 | 14 | 14 | 0 | |
| 8.3 | 14 | 14 | 0 | |
| 8.2 | 14 | 14 | 0 | |
| 8.1 | 14 | 14 | 0 | 1 fewer instruction than PHP 7.4 |
| 7.4 | 15 | 15 | 0 |
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
- __()Retrieves the translation of $text.
Source code
function twentyfifteen_upgrade_notice() { printf( '<div class="error"><p>%s</p></div>', sprintf( /* translators: %s: WordPress version. */ __( 'Twenty Fifteen requires at least WordPress version 4.1. You are running version %s. Please upgrade and try again.', 'twentyfifteen' ), $GLOBALS['wp_version'] ) );}Changelog
Introduced in Twenty Fifteen 1.0. 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 7.1.0 tag, from
src/wp-content/themes/twentyfifteen/inc/back-compat.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.