12. How do you check if a file is writable in PHP?

What is the purpose of the 'b' mode when opening a file in PHP?

A). Binary mode for reading and writing data

B). Read mode for large files

C). Backup mode for file operations

D). Buffer mode for file handling

Which function is used to write data to a file in PHP?

A). fwrite()

B). fput()

C). file_write()

D). put_file()

Which mode should be used to open a file for both reading and writing in PHP?

A). r+

B). w+

C). a+

D). rb+

What is the purpose of the 'x' mode when opening a file in PHP?

A). Create a new file and open it for writing

B). Read the file in exclusive mode

C). Execute the file as a PHP script

D). Export file contents to another format

How do you check if a file is readable in PHP?

A). is_readable()

B). can_read()

C). is_read()

D). readable_file()

Which function is used to open a file in PHP?

A). fopen()

B). readfile()

C). file_get_contents()

D). file_put_contents()

What happens if you try to open a non-existent file in 'r' mode?

A). fopen() returns false

B). A new file is created

C). The script throws an error

D). The file is opened in read mode

Which function is used to check if a file exists in PHP?

A). file_exists()

B). is_file()

C). file_check()

D). check_file()

What does the 'rb' mode do when opening a file in PHP?

A). Read mode for binary files

B). Read mode for large files

C). Read mode with buffering

D). Read mode with backup

Which function is used to write data to a file if the file doesn't exist in PHP?

A). file_put_contents()

B). fwrite()

C). fput()

D). put_file()