twentyseventeen_content_image_sizes_attr( string $sizes, array $size ): string
- Since
- Twenty Seventeen 1.0
- Source
wp-content/themes/twentyseventeen/functions.php:568
Compatibility
- WordPress
- since Twenty Seventeen 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.
Parameters
$sizesstring- A source size value for use in a 'sizes' attribute.
$sizearray- Image size. Accepts an array of width and height values in pixels (in that order).
Return value
string- A source size value for use in a content image 'sizes' attribute.
Performance profile
How much work a call to twentyseventeen_content_image_sizes_attr() 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
- 15–34
- 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 34.
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 twentyseventeen_content_image_sizes_attr()
Further down the call graph this can also reach option, cache, serialize, transient and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 10 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost twentyseventeen_content_image_sizes_attr() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
is_active_sidebar() && !is_page() | 15–17 | is_active_sidebar(), is_page() |
is_active_sidebar() && is_page() | 18–22 | is_active_sidebar(), is_page(), get_theme_mod() |
!is_active_sidebar() && is_archive() && !is_page() | 18–20 | is_active_sidebar(), is_archive(), is_page() |
!is_active_sidebar() && is_archive() && is_page() | 21–25 | is_active_sidebar(), is_archive(), is_page(), get_theme_mod() |
!is_active_sidebar() && !is_archive() && is_search() && !is_page() | 21–23 | is_active_sidebar(), is_archive(), is_search(), is_page() |
!is_active_sidebar() && !is_archive() && !is_search() && !is_page() | 22–26 | is_active_sidebar(), is_archive(), is_search(), is_home(), is_page() |
!is_active_sidebar() && !is_archive() && is_search() && is_page() | 24–28 | is_active_sidebar(), is_archive(), is_search(), is_page(), get_theme_mod() |
!is_active_sidebar() && !is_archive() && !is_search() && is_home() && is_page() | 27–31 | is_active_sidebar(), is_archive(), is_search(), is_home(), is_page(), get_theme_mod() |
!is_active_sidebar() && !is_archive() && !is_search() && !is_home() | 27–29 | is_active_sidebar(), is_archive(), is_search(), is_home(), is_page(), is_page() |
!is_active_sidebar() && !is_archive() && !is_search() && !is_home() && is_page() | 30–34 | is_active_sidebar(), is_archive(), is_search(), is_home(), is_page(), is_page(), get_theme_mod() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 34 instructions, 15–34 executed per call, 9 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 · 6
- is_active_sidebar()Determines whether a sidebar contains widgets.
- is_archive()Determines whether the query is for an existing archive page.
- is_search()Determines whether the query is for a search.
- is_home()Determines whether the query is for the blog homepage.
- is_page()Determines whether the query is for an existing single page.
- get_theme_mod()Retrieves theme modification value for the active theme.
Source code
function twentyseventeen_content_image_sizes_attr( $sizes, $size ) { $width = $size[0]; if ( 740 <= $width ) { $sizes = '(max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px'; } if ( is_active_sidebar( 'sidebar-1' ) || is_archive() || is_search() || is_home() || is_page() ) { if ( ! ( is_page() && 'one-column' === get_theme_mod( 'page_options' ) ) && 767 <= $width ) { $sizes = '(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px'; } } return $sizes;}Changelog
Introduced in Twenty Seventeen 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/twentyseventeen/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.