15. Which PHP function retrieves the last modified time of a file?

What attribute is required in HTML forms for file uploads?

A). enctype='multipart/form-data'

B). method='file'

C). enctype='application/x-www-form-urlencoded'

D). enctype='text/plain'

What PHP function retrieves information about a file?

A). stat()

B). fileinfo()

C). fileinfo_stat()

D). fileinfo()

What PHP function is used to delete a file?

A). unlink()

B). remove()

C). delete()

D). file_delete()

Which PHP function removes a directory?

A). rmdir()

B). removedir()

C). deletedir()

D). unlink()

What PHP function creates a directory?

A). mkdir()

B). create_directory()

C). newdir()

D). dir_create()

Which PHP function is used to handle file uploads?

A). move_uploaded_file()

B). copy()

C). rename()

D). fopen()

Which PHP function returns the size of a file?

A). filesize()

B). get_filesize()

C). file_size()

D). size()

Which PHP function checks if a file or directory exists?

A). file_exists()

B). is_file()

C). exists()

D). check_file()

Which PHP function is used to change file permissions?

A). chmod()

B). chown()

C). chgrp()

D). umask()

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