twentythirteen_the_attached_image()
- Since
- Twenty Thirteen 1.0
- Source
wp-content/themes/twentythirteen/functions.php:665
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_the_attached_image() 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
- Heavy
- Scaling
- Scales with input
- Instructions
- 46–65
- Plugin surface
- 1 hook
- Called by
- 0
Reaches the database via get_post().
The body loops, so the work grows with how much data it finds.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 70.
Third-party callbacks on 'twentythirteen_attachment_size' run inside this call, and their cost is not bounded by anything here.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
apply_filters()called directly - querycontent query
get_post()called directly - optionoption read or write
get_option()one call below twentythirteen_the_attached_image()
Further down the call graph this can also reach cache, serialize 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 · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost twentythirteen_the_attached_image() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 46 | apply_filters(), wp_get_attachment_url(), get_post(), post_parent(), esc_url(), the_title_attribute(), wp_get_attachment_image(), printf() |
$attachment_ids | 54–63 | apply_filters(), wp_get_attachment_url(), get_post(), post_parent(), get_attachment_link(), esc_url(), the_title_attribute(), wp_get_attachment_image(), printf() |
!$attachment_ids | 56–65 | apply_filters(), wp_get_attachment_url(), get_post(), post_parent(), reset(), get_attachment_link(), esc_url(), the_title_attribute(), wp_get_attachment_image(), printf() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 70 instructions, 46–65 executed per call, 5 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.
Hooks and filters fired · 1
One hook fires while twentythirteen_the_attached_image() runs, in this order:
- apply_filters( twentythirteen_attachment_size )filterline 676 (+11 into the body)
Filters the image attachment size to use.
Uses · 8
- apply_filters()Calls the callback functions that have been added to a filter hook.
- wp_get_attachment_url()Retrieves the URL for an attachment.
- get_post()Retrieves post data given a post ID or post object.
- get_posts()Retrieves an array of the latest posts, or posts matching the given criteria.
- get_attachment_link()Retrieves the permalink for an attachment.
- esc_url()Checks and cleans a URL.
- the_title_attribute()Sanitizes the current title when retrieving or displaying.
- wp_get_attachment_image()Gets an HTML img element representing an image attachment.
Source code
function twentythirteen_the_attached_image() { /** * Filters the image attachment size to use. * * @since Twenty thirteen 1.0 * * @param array $size { * @type int The attachment height in pixels. * @type int The attachment width in pixels. * } */ $attachment_size = apply_filters( 'twentythirteen_attachment_size', array( 724, 724 ) ); $next_attachment_url = wp_get_attachment_url(); $post = get_post(); /* * Grab the IDs of all the image attachments in a gallery so we can get the URL * of the next adjacent image in a gallery, or the first image (if we're * looking at the last image in a gallery), or, in a gallery of one, just the * link to that image file. */ $attachment_ids = get_posts( array( 'post_parent' => $post->post_parent, 'fields' => 'ids', 'numberposts' => -1, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID', ) ); // If there is more than 1 attachment in a gallery... if ( count( $attachment_ids ) > 1 ) { foreach ( $attachment_ids as $idx => $attachment_id ) { if ( $attachment_id === $post->ID ) { $next_id = $attachment_ids[ ( $idx + 1 ) % count( $attachment_ids ) ]; break; } } if ( $next_id ) { // ...get the URL of the next image attachment. $next_attachment_url = get_attachment_link( $next_id ); } else { // ...or get the URL of the first image attachment. $next_attachment_url = get_attachment_link( reset( $attachment_ids ) ); } } printf( '<a href="%1$s" title="%2$s" rel="attachment">%3$s</a>', esc_url( $next_attachment_url ), the_title_attribute( array( 'echo' => false ) ), wp_get_attachment_image( $post->ID, $attachment_size ) ); }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/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.