before_last_bar( string $text ): string
- Since
- 2.8.0
- Source
wp-includes/l10n.php:236
Description
Meant for removing the last item in a string, such as 'Role name|User role'. The original string will be returned if no pipe '|' characters are found in the string.
Compatibility
- WordPress
- since 2.8.0
- 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
$textstring- A pipe-delimited string.
Return value
string- Either $text or everything before the last pipe.
Performance profile
How much work a call to before_last_bar() 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
- 8–10
- 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, depending on the branch taken. The body compiles to 11.
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 before_last_bar() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 8–10 | strrpos() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 11 | 8–10 | 1 | |
| 8.5 | 11 | 8–10 | 1 | |
| 8.4 | 11 | 8–10 | 1 | 3 fewer instructions than PHP 8.3 |
| 8.3 | 14 | 8–13 | 1 | |
| 8.2 | 14 | 8–13 | 1 | |
| 8.1 | 14 | 8–13 | 1 | |
| 7.4 | 14 | 8–13 | 1 |
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.
Used by · 4
- _c()Retrieve translated string with vertical bar context
- _nc()Legacy version of _n(), which supports contexts.
- translate_user_role()Translates role name.
- translate_with_context()Translates $text like translate(), but assumes that the text contains a context after its last vertical bar.
Source code
function before_last_bar( $text ) { $last_bar = strrpos( $text, '|' ); if ( false === $last_bar ) { return $text; } else { return substr( $text, 0, $last_bar ); }}Changelog
Introduced in 2.8.0. 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 7.0.4 tag, from
src/wp-includes/l10n.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.