Directories, Files and Images

Part:   1  2  3 

This chapter describes:

• Directory functions.
• File system functions.
• Image functions.
• ShowPhoto.php - a sample program.

Directory Functions

PHP offers the following built-in functions to manage directories of file systems:

• chdir -- Change directory
• chroot -- Change the root directory
• dir -- Directory class
• closedir -- Close directory handle
• getcwd -- Gets the current working directory
• opendir -- Open directory handle
• readdir -- Read entry from directory handle
• rewinddir -- Rewind directory handle
• scandir -- List files and directories inside the specified path

File System Functions

PHP offers a lots of nice built-in functions to manage files:

• basename -- Returns filename component of path
• clearstatcache -- Clears file status cache
• copy -- Copies file
• dirname -- Returns directory name component of path
• disk_free_space -- Returns available space in directory
• disk_total_space -- Returns the total size of a directory
• fclose -- Closes an open file pointer
• feof -- Tests for end-of-file on a file pointer
• fflush -- Flushes the output to a file
• fgetc -- Gets character from file pointer
• fgetcsv -- Gets line from file pointer and parse for CSV fields
• fgets -- Gets line from file pointer
• fgetss -- Gets line from file pointer and strip HTML tags
• file_exists -- Checks whether a file or directory exists
• file_get_contents -- Reads entire file into a string
• file_put_contents -- Write a string to a file
• file -- Reads entire file into an array
• fileatime -- Gets last access time of file
• filemtime -- Gets file modification time
• fileperms -- Gets file permissions
• filesize -- Gets file size
• filetype -- Gets file type
• flock -- Portable advisory file locking
• fnmatch -- Match filename against a pattern

(Continued on next part...)

Part:   1  2  3