Including Files with include()Returning a Value from an Included DocumentUsing include() Within Control Structuresinclude_once()The include_path DirectiveTesting FilesChecking for Existence with file_exists()A File or a Directory?Checking the Status of a FileDetermining File Size with filesize()Getting Date Information About a FileCreating a Function That Performs Multiple File TestsCreating and Deleting FilesOpening a File for Writing, Reading, or AppendingReading from FilesReading Lines from a File with fgets() and feof()Reading Arbitrary Amounts of Data from a File with fread()Reading Characters from a File with fgetc()Writing or Appending to a FileWriting to a File with fwrite() or fputs()Locking Files with flock()Working with DirectoriesCreating Directories with mkdir()Removing a Directory with rmdir()Opening a Directory for Reading with opendir()Reading the Contents of a Directory with readdir()SummaryQ&AWorkshopQuizActivities