wp_get_mime_types(): string[]
- Since
- 3.5.0, 4.2.0, 4.9.2, 4.9.6, 6.8.0
- Source
wp-includes/functions.php:3447
Compatibility
- WordPress
- since 6.8.0
- 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[]- Array of mime types keyed by the file extension regex corresponding to those types.
Performance profile
How much work a call to wp_get_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
- Trivial
- Scaling
- Constant
- Instructions
- 5
- Plugin surface
- 1 hook
- Called by
- 11
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. The body compiles to 5.
Third-party callbacks on 'mime_types' run inside this call, and their cost is not bounded by anything here.
11 places 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
What one call costs · 1 distinct outcome
One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_get_mime_types() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 5 | apply_filters() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 5 instructions, 5 executed per call, 0 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 wp_get_mime_types() runs, in this order:
- apply_filters( mime_types )filterline 3459 (+12 into the body)
Filters the list of mime types and file extensions.
Uses · 1
- apply_filters()Calls the callback functions that have been added to a filter hook.
Used by · 11
- WP_Image_Editor::get_mime_type()Returns first matched mime-type from extension, as mapped from wp_get_mime_types()
- do_enclose()Checks content for video and audio links to add as enclosures.
- get_allowed_mime_types()Retrieves the list of allowed mime types and file extensions.
- get_header_video_settings()Retrieves header video settings.
- get_post_mime_types()Gets default post mime types.
- sanitize_file_name()Sanitizes a filename, replacing whitespace with dashes.
- wp_audio_shortcode()Builds the Audio shortcode output.
- wp_get_code_editor_settings()Generates and returns code editor settings.
- wp_get_default_extension_for_mime_type()Returns the first matched extension for the mime type, as mapped from wp_get_mime_types().
- wp_playlist_shortcode()Builds the Playlist shortcode output.
- wp_video_shortcode()Builds the Video shortcode output.
Source code
function wp_get_mime_types() { /** * Filters the list of mime types and file extensions. * * This filter should be used to add, not remove, mime types. To remove * mime types, use the {@see 'upload_mimes'} filter. * * @since 3.5.0 * * @param string[] $wp_get_mime_types Mime types keyed by the file extension regex * corresponding to those types. */ return apply_filters( 'mime_types', array( // Image formats. 'jpg|jpeg|jpe' => 'image/jpeg', 'gif' => 'image/gif', 'png' => 'image/png', 'bmp' => 'image/bmp', 'tiff|tif' => 'image/tiff', 'webp' => 'image/webp', 'avif' => 'image/avif', 'ico' => 'image/x-icon', // TODO: Needs improvement. All images with the following mime types seem to have .heic file extension. 'heic' => 'image/heic', 'heif' => 'image/heif', 'heics' => 'image/heic-sequence', 'heifs' => 'image/heif-sequence', // Video formats. 'asf|asx' => 'video/x-ms-asf', 'wmv' => 'video/x-ms-wmv', 'wmx' => 'video/x-ms-wmx', 'wm' => 'video/x-ms-wm', 'avi' => 'video/avi', 'divx' => 'video/divx', 'flv' => 'video/x-flv', 'mov|qt' => 'video/quicktime', 'mpeg|mpg|mpe' => 'video/mpeg', 'mp4|m4v' => 'video/mp4', 'ogv' => 'video/ogg', 'webm' => 'video/webm', 'mkv' => 'video/x-matroska', '3gp|3gpp' => 'video/3gpp', // Can also be audio. '3g2|3gp2' => 'video/3gpp2', // Can also be audio. // Text formats. 'txt|asc|c|cc|h|srt' => 'text/plain', 'csv' => 'text/csv', 'tsv' => 'text/tab-separated-values', 'ics' => 'text/calendar', 'rtx' => 'text/richtext', 'css' => 'text/css', 'htm|html' => 'text/html', 'vtt' => 'text/vtt', 'dfxp' => 'application/ttaf+xml', // Audio formats. 'mp3|m4a|m4b' => 'audio/mpeg', 'aac' => 'audio/aac', 'ra|ram' => 'audio/x-realaudio', 'wav|x-wav' => 'audio/wav', 'ogg|oga' => 'audio/ogg', 'flac' => 'audio/flac', 'mid|midi' => 'audio/midi', 'wma' => 'audio/x-ms-wma', 'wax' => 'audio/x-ms-wax', 'mka' => 'audio/x-matroska', // Misc application formats. 'rtf' => 'application/rtf', 'js' => 'application/javascript', 'pdf' => 'application/pdf', 'swf' => 'application/x-shockwave-flash', 'class' => 'application/java', 'tar' => 'application/x-tar', 'zip' => 'application/zip', 'gz|gzip' => 'application/x-gzip', 'rar' => 'application/rar', '7z' => 'application/x-7z-compressed', 'exe' => 'application/x-msdownload',Changelog
Introduced in 3.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
audio/x-wav.from the docblockAbout this page
- Parsed data
- Generated from the wordpress-develop 7.0.4 tag, from
src/wp-includes/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.