wppaste
WordPress

get_attachment_template(): string

Since
2.0.0, 4.3.0
Source
wp-includes/template.php:659
Retrieves path of attachment template in current or parent template.

Description

The hierarchy for this template looks like:

  1. {mime_type}-{sub_type}.php
  2. {sub_type}.php
  3. {mime_type}.php
  4. attachment.php

An example of this is:

  1. image-jpeg.php
  2. jpeg.php
  3. image.php
  4. attachment.php

The template hierarchy and template path are filterable via the '$type_template_hierarchy' and '$type_template' dynamic hooks, where $type is 'attachment'.

Compatibility

WordPress
since 4.3.0
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.

Return value

string
Full path to attachment template file.

Performance profile

How much work a call to get_attachment_template() 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

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
12–38

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 44.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

  • hookthird-party callbacksapply_filters()one call below get_attachment_template()

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 · 2 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost get_attachment_template() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always12–35get_queried_object(), get_query_template()
always29–38get_queried_object(), explode(), get_query_template()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev4412–383
8.54412–383
8.44412–3833 fewer instructions than PHP 8.3
8.34712–413
8.24712–413
8.14712–4131 fewer instruction than PHP 7.4
7.44812–423

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

Source code

function get_attachment_template() {	$attachment = get_queried_object(); 	$templates = array(); 	if ( $attachment ) {		if ( str_contains( $attachment->post_mime_type, '/' ) ) {			list( $type, $subtype ) = explode( '/', $attachment->post_mime_type );		} else {			list( $type, $subtype ) = array( $attachment->post_mime_type, '' );		} 		if ( ! empty( $subtype ) ) {			$templates[] = "{$type}-{$subtype}.php";			$templates[] = "{$subtype}.php";		}		$templates[] = "{$type}.php";	}	$templates[] = 'attachment.php'; 	return get_query_template( 'attachment', $templates );}

Changelog

Introduced in 2.0.0. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

4.3.0
The order of the mime type logic was reversed so the hierarchy is more logical.from the docblock
2.0.0
Introduced.from the docblock

About this page

Parsed data
Generated from the wordpress-develop 6.7.7 tag, from src/wp-includes/template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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