get_available_post_mime_types( string $type = 'attachment' ): string[]
- Since
- 2.5.0
- Source
wp-includes/post.php:8647
Compatibility
- WordPress
- since 2.5.0
- 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
$typestringoptional- Default:
'attachment'
Return value
string[]- An array of MIME types.
Performance profile
How much work a call to get_available_post_mime_types() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Heavy
- Scaling
- Constant
- Instructions
- 17–29
- Plugin surface
- 1 hook
- Called by
- 1
Reaches the database via ->get_col().
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 29.
Third-party callbacks on 'pre_get_available_post_mime_types' run inside this call, and their cost is not bounded by anything here.
1 place in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()called directly - sqldatabase query
->get_col()called directly
What one call costs · 2 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost get_available_post_mime_types() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
is_array($mime_types) | 17 | apply_filters(), array_filter(), array_values() |
!is_array($mime_types) | 29 | apply_filters(), ->prepare(), ->get_col(), array_filter(), array_values() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 29 instructions, 17–29 executed per call, 1 branch. 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 get_available_post_mime_types() runs, in this order:
- apply_filters( pre_get_available_post_mime_types )filterline 8658 (+11 into the body)
Filters the list of available post MIME types for the given post type.
Uses · 1
- apply_filters()Calls the callback functions that have been added to a filter hook.
Used by · 1
- wp_edit_attachments_query()Executes a query for attachments. An array of WP_Query arguments can be passed in, which will override the arguments set by this function.
Source code
function get_available_post_mime_types( $type = 'attachment' ) { global $wpdb; /** * Filters the list of available post MIME types for the given post type. * * @since 6.4.0 * * @param string[]|null $mime_types An array of MIME types. Default null. * @param string $type The post type name. Usually 'attachment' but can be any post type. */ $mime_types = apply_filters( 'pre_get_available_post_mime_types', null, $type ); if ( ! is_array( $mime_types ) ) { $mime_types = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s AND post_mime_type != ''", $type ) ); } // Remove nulls from returned $mime_types. return array_values( array_filter( $mime_types ) );}Changelog
Introduced in 2.5.0. 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-includes/post.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.