file_exists() function checks if a file or directory exists in the file system and returns true if it exists and false otherwise.
Which PHP function retrieves the last modified time of a file?
A). filemtime()
B). file_lastmod()
C). last_modified()
D). mod_time()
What does the PHP function filetype() return?
A). Type of a file
B). Size of a file
C). Extension of a file
D). Permissions of a file
Which PHP function is used to change file permissions?
A). chmod()
B). chown()
C). chgrp()
D). umask()
Which PHP function removes a directory?
A). rmdir()
B). removedir()
C). deletedir()
D). unlink()
What is the purpose of the PHP function fileatime()?
A). Retrieves the last access time of a file
B). Retrieves the last modified time of a file
C). Retrieves the creation time of a file
D). Retrieves the last status change time of a file
Which PHP function returns the size of a file?
A). filesize()
B). get_filesize()
C). file_size()
D). size()
Which PHP function sets the file pointer to the beginning of a file?
A). rewind()
B). reset()
C). fseek()
D). file_start()
What PHP function is used to delete a file?
A). unlink()
B). remove()
C). delete()
D). file_delete()
Which superglobal variable in PHP is used to handle file uploads?
A). $_FILES
B). $_POST
C). $_GET
D). $_REQUEST
What PHP function creates a directory?
A). mkdir()
B). create_directory()
C). newdir()
D). dir_create()