file_put_contents() is used to write data to a file in PHP. If the file doesn't exist, it creates a new file and writes the data to it. If the file already exists, its contents are overwritten.
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 'w+' mode when opening a file in PHP?
A). Read and write mode, truncates file to zero length
B). Append mode, creates new file if it doesn't exist
C). Write mode, appends data to end of file
D). Read mode, creates new file if it doesn't exist
Which function is used to open a file in PHP?
A). fopen()
B). readfile()
C). file_get_contents()
D). file_put_contents()
How do you check if a file is readable in PHP?
A). is_readable()
B). can_read()
C). is_read()
D). readable_file()
What is the purpose of the 'r' mode when opening a file in PHP?
A). Read data from a file
B). Write data to a file
C). Append data to a file
D). Truncate a 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
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
Which mode should be used to open a file for writing in PHP?
A). w
B). r
C). a
D). wb
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 read the entire content of a file into a string in PHP?
A). file_get_contents()
B). fread()
C). fget_contents()
D). read_file()