twentyfourteen_the_attached_image()
- Since
- Twenty Fourteen 1.0
- Source
wp-content/themes/twentyfourteen/functions.php:467
Compatibility
- WordPress
- since Twenty Fourteen 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 twentyfourteen_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
- 42–61
- 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 66.
Third-party callbacks on 'twentyfourteen_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
- querycontent query
get_post()called directly - hookthird-party callbacks
apply_filters()called directly - optionoption read or write
get_option()one call below twentyfourteen_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 twentyfourteen_the_attached_image() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 42 | get_post(), apply_filters(), wp_get_attachment_url(), post_parent(), esc_url(), wp_get_attachment_image(), printf() |
$attachment_ids | 50–59 | get_post(), apply_filters(), wp_get_attachment_url(), post_parent(), get_attachment_link(), esc_url(), wp_get_attachment_image(), printf() |
!$attachment_ids | 52–61 | get_post(), apply_filters(), wp_get_attachment_url(), post_parent(), reset(), get_attachment_link(), esc_url(), 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: 66 instructions, 42–61 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 twentyfourteen_the_attached_image() runs, in this order:
- apply_filters( twentyfourteen_attachment_size )filterline 481 (+14 into the body)
Filters the default Twenty Fourteen attachment size.
Uses · 7
- get_post()Retrieves post data given a post ID or post object.
- 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_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.
- wp_get_attachment_image()Gets an HTML img element representing an image attachment.
Source code
function twentyfourteen_the_attached_image() { $post = get_post(); /** * Filters the default Twenty Fourteen attachment size. * * @since Twenty Fourteen 1.0 * * @param array $dimensions { * An array of height and width dimensions. * * @type int $height Height of the image in pixels. Default 810. * @type int $width Width of the image in pixels. Default 810. * } */ $attachment_size = apply_filters( 'twentyfourteen_attachment_size', array( 810, 810 ) ); $next_attachment_url = wp_get_attachment_url(); /* * 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" rel="attachment">%2$s</a>', esc_url( $next_attachment_url ), wp_get_attachment_image( $post->ID, $attachment_size ) ); }Changelog
Introduced in Twenty Fourteen 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/twentyfourteen/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.