get_allowed_mime_types() │ WP 2.8.6

Retrieve list of allowed mime types and file extensions.

Uses: wp_get_mime_types()
1 time — 0.000001 sec (speed of light) | 50000 times — 0.89 sec (very fast) | PHP 7.3.12, WP 5.4.1
Hooks from the function

Return

String[]. Array of mime types keyed by the file extension regex corresponding to those types.

Usage

get_allowed_mime_types( $user );
$user(int|WP_User)
User to check.
Default: current user

Changelog

Since 2.8.6 Introduced.

Code of get_allowed_mime_types() WP 5.9.3

wp-includes/functions.php 
function get_allowed_mime_types( $user = null ) {
	$t = wp_get_mime_types();

	unset( $t['swf'], $t['exe'] );
	if ( function_exists( 'current_user_can' ) ) {
		$unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' );
	}

	if ( empty( $unfiltered ) ) {
		unset( $t['htm|html'], $t['js'] );
	}

	/**
	 * Filters list of allowed mime types and file extensions.
	 *
	 * @since 2.0.0
	 *
	 * @param array            $t    Mime types keyed by the file extension regex corresponding to those types.
	 * @param int|WP_User|null $user User ID, User object or null if not provided (indicates current user).
	 */
	return apply_filters( 'upload_mimes', $t, $user );
}

Rarely used