ExpressionEngine Docs

Mime Type Class

Calling the Mime Type Class

class Mime_type

ExpressionEngine uses the Mime Type class whenever a file’s, or buffer’s, Mime type needs to be determined. Additionally, it is used to dertermine if a file is an image, and to determine if a file is safe for uploading. This class is a library, so you have to load the Mime Type library before using it:

ee()->load->library('mime_type');

Note: The Mime Type library uses the Mime Type at system/ee/legacy/config/mimes.php when determining if a file is safe for uploading or is an image.

Note: There is a mime_whitelist_additions config override for adding installation specific Mime Types to the allow list.

Note: There is a mime_whitelist_member_exception config override and a mime_whitelist_member_group_exception config override which will bypass the whitelist for those members and/or member roles.

Methods

getWhitelist()

Parameter Type Description
Returns Array An array of Mime types that are on the whitelist

Returns the whitelist of Mime Types

ofFile($path)

Parameter Type Description
$path String The full path to the file being checked
Returns String The Mime type of the file
Throws Exception If the file does not exist

Determines the Mime type of a file

ofBuffer($buffer)

Parameter Type Description
$buffer String The buffer/data to check
Returns String The Mime type of the buffer

Determines the Mime type of a buffer

fileIsImage($path)

Parameter Type Description
$path String The full path to the file being checked
Returns Bool TRUE if it is an image; FALSE if not
Throws Exception If the file does not exist

Determines if a file is an image or not.

isImage($mime)

Parameter Type Description
$mime String The mime to check
Returns Bool TRUE if it is an image; FALSE if not

Determines if a Mime type is in our list of valid image Mime types.

fileIsSafeForUpload($path)

Parameter Type Description
$path String The full path to the file being checked
Returns Bool TRUE if it safe; FALSE if not
Throws Exception If the file does not exist

Gets the Mime type of a file and compares it to our whitelist to see if it is safe for upload.

isSafeForUpload($mime)

Parameter Type Description
$mime String The mime to check
Returns Bool TRUE if it is an image; FALSE if not

Checks a given Mime type against our whitelist to see if it is safe for upload