Returns the mime type of the file.
The mime type is guessed using a MimeTypeGuesserInterface instance, which uses finfo_file() then the "file" system binary, depending on which of those are available.
@return string|null The guessed mime type (e.g. "application/pdf")
@see MimeTypes
See Implementation
Returns the mime type of the file.
The mime type is guessed using a MimeTypeGuesserInterface instance, which uses finfo_file() then the "file" system binary, depending on which of those are available.
@return string|null The guessed mime type (e.g. "application/pdf")
@see MimeTypes