twentythirteen_admin_header_style()
- Since
- Twenty Thirteen 1.0
- Source
wp-content/themes/twentythirteen/inc/custom-header.php:154
Compatibility
- WordPress
- since Twenty Thirteen 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 twentythirteen_admin_header_style() 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
- 16–26
- 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, depending on the branch taken. The body compiles to 26.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
apply_filters()one call below twentythirteen_admin_header_style()
Further down the call graph this can also reach option, cache, serialize, query and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 4 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost twentythirteen_admin_header_style() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 16–17 | get_header_image(), display_header_text() |
empty($header_image) | 18–20 | get_header_image(), display_header_text(), display_header_text() |
!empty($header_image) | 22–23 | get_header_image(), esc_url(), display_header_text() |
| always | 24–26 | get_header_image(), esc_url(), display_header_text(), display_header_text() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 26 instructions, 16–26 executed per call, 4 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 · 3
- get_header_image()Retrieves header image for custom header.
- esc_url()Checks and cleans a URL.
- display_header_text()Whether to display the header text.
Source code
function twentythirteen_admin_header_style() { $header_image = get_header_image(); ?> <style id="twentythirteen-admin-header-css"> .appearance_page_custom-header #headimg { border: none; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; <?php if ( ! empty( $header_image ) ) { echo 'background: url(' . esc_url( $header_image ) . ') no-repeat scroll top; background-size: 1600px auto;'; } ?> padding: 0 20px; } #headimg .home-link { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; margin: 0 auto; max-width: 1040px; <?php if ( ! empty( $header_image ) || display_header_text() ) { echo 'min-height: 230px;'; } ?> width: 100%; } <?php if ( ! display_header_text() ) : ?> #headimg h1, #headimg h2 { position: absolute !important; clip-path: inset(50%); } <?php endif; ?> #headimg h1 { font: bold 60px/1 Bitter, Georgia, serif; margin: 0; padding: 58px 0 10px; } #headimg h1 a { text-decoration: none; } #headimg h1 a:hover { text-decoration: underline; } #headimg h2 { font: 200 italic 24px "Source Sans Pro", Helvetica, sans-serif; margin: 0; text-shadow: none; } .default-header img { max-width: 230px; width: auto; } </style> <?php}Changelog
Introduced in Twenty Thirteen 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/twentythirteen/inc/custom-header.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.