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get_post_mime_type()

get_post_mime_type( int|WP_Post $post = null ): string|false

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Retrieves the mime type of an attachment based on the ID.

Description

This function can be used with any post type, but it makes more sense with attachments.

Parameters

$postint|WP_Postoptional
Post ID or post object. Defaults to global $post.

Default:null

Return

string|false The mime type on success, false on failure.

Source

function get_post_mime_type( $post = null ) {
	$post = get_post( $post );

	if ( is_object( $post ) ) {
		return $post->post_mime_type;
	}

	return false;
}

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UsesDescription
get_post()wp-includes/post.php

Retrieves post data given a post ID or post object.

Used byDescription
WP_REST_Attachments_Controller::handle_featured_media()wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php

Determines the featured media based on a request param.

WP_REST_Attachments_Controller::edit_media_item()wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php

Applies edits to a media item and creates a new attachment record.

wp_image_editor()wp-admin/includes/image-edit.php

Loads the WP image-editing interface.

wp_generate_attachment_metadata()wp-admin/includes/image.php

Generates attachment meta data and create image sub-sizes for images.

get_body_class()wp-includes/post-template.php

Retrieves an array of the class names for the body element.

Changelog

VersionDescription
2.0.0Introduced.

User Contributed Notes

  1. Skip to note 2 content
    Codex
    You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note

    Return an icon image path according to the MIME type of the given post

    function get_icon_for_attachment($post_id) {
  $base = get_template_directory_uri() . "/images/icons/";
  $type = get_post_mime_type($post_id);
  switch ($type) {
    case 'image/jpeg':
    case 'image/png':
    case 'image/gif':
      return $base . "image.png"; break;
    case 'video/mpeg':
    case 'video/mp4': 
    case 'video/quicktime':
      return $base . "video.png"; break;
    case 'text/csv':
    case 'text/plain': 
    case 'text/xml':
      return $base . "text.png"; break;
    default:
      return $base . "file.png";
  }
}
// call it like this:
echo '<img src="'.get_icon_for_attachment($my_attachment->ID).'" />';

    WordPress already has a function to get the mime type icon called wp_mime_type_icon
    https://developer.wordpress.org/reference/functions/wp_mime_type_icon/

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