Question

get_allowed_mime_types( int|WP_User $user = null )

Retrieve list of allowed mime types and file extensions.

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description

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参数

$user

(int|WP_User) (Optional) User to check. Defaults to current user.

Default value: null

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返回值

(array) Array of mime types keyed by the file extension regex corresponding to those types.

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源代码

File: 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'] );

	/**
	 * Filters list of allowed mime types and file extensions.
	 *
	 * @since 2.0.0
	 *
	 * @param array            $t    Mime types keyed by the file extension regex corresponding to
	 *                               those types. 'swf' and 'exe' removed from full list. 'htm|html' also
	 *                               removed depending on '$user' capabilities.
	 * @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 );
}

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更新日志

Version	description
2.8.6	Introduced.

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相关函数

Uses

• wp-includes/capabilities.php: user_can()
• wp-includes/capabilities.php: current_user_can()
• wp-includes/functions.php: wp_get_mime_types()
• wp-includes/functions.php: upload_mimes
• wp-includes/plugin.php: apply_filters()

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Used By

• wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php: WP_REST_Attachments_Controller::get_media_types()
• wp-includes/formatting.php: sanitize_file_name()
• wp-includes/functions.php: wp_check_filetype()
• wp-includes/functions.php: wp_check_filetype_and_ext()
• wp-includes/media.php: wp_plupload_default_settings()
• wp-includes/media.php: wp_enqueue_media()
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User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note Contributed by Codex

   Function to retrieve the mime type icon of a file by its extension.

   
   <?php
   /**
    * Get mime type icon URL based on file extension.
    *
    * @param $file_ext The file extension to get the icon for.
    * @return string Icon URL.
    */
   function wpdocs_get_icon_by_file_extension($file_ext) {
   	$mimes = get_allowed_mime_types();
   	if ( ! empty( $mimes ) ) {
   		foreach ($ mimes as $type => $mime ) {
   			if ( false !== strpos( $type, $file_ext ) ) {
   				return wp_mime_type_icon($mime);
   			}
   		}
   	}
   }
   ?>
   <img src="<?php echo esc_url( wpdocs_get_icon_by_file_extension( 'mp4' ) ); ?>" />