Functions to Manage Directories, Files and Images

<< PHP Tutorials - Herong's Tutorial Examples

This chapter provides tutorial examples and notes about functions to manage directories, files, and images. Topics include directory management functions like mkdir(), file testing functions like is_file(), file input and output functions like fopen(), image file management functions like imagecreatefromgif().

opendir() and Directory Management Functions

file_exists() and File Testing Functions

FileExistsTest.php - File Testing Examples

fopen() and File Input/Output Functions

File_Input_Output_Test.php - File Input/Output Examples

readfile() and Special File Handling Functions

imagecreatetruecolor() and GD Imaging Library Functions

ShowPhoto.php - Simple Slid Show Script

Conclusion:

• PHP supports directory management functions similar to Unix commands like chdir(), mkdir() and rmdir().
• To navigate through the directory tree, you can use opendir() and is_dir() functions.
• To obtain detailed information about a file, you can use the stat() function.
• To read data from a file, you can use fopen() and fread() functions.
• To write data to a file, you can use fopen() and fwrite() functions.
• To read image from a GIF file, you can use the imagecreatefromgif() function.