mime_content_type
Introduction
File System Related Extensions
PHP Manual

# xattr

- Introduction
- Installing/Configuring
  - Installation
  - Runtime Configuration
  - Resource Types
- Predefined Constants
- xattr Functions
  - xattr_get — Get an extended attribute
  - xattr_list — Get a list of extended attributes
  - xattr_remove — Remove an extended attribute
  - xattr_set — Set an extended attribute
  - xattr_supported — Check if filesystem supports extended attributes

mime_content_type
Introduction
File System Related Extensions
PHP Manual