Nothing, or the file will not exist, and the script will output an error
Correct:
Nothing, or the file will not exist, and the script will output an error
The correct answer is E. Note how the file is being opened with the r parameter, which indicates that we want to use the file for reading. Therefore, if the file does not exist, PHP will output an error complaining that it cannot be found. If it does exist, the call to fopen() will be successful, but the subsequent fwrite() operations will fail due to the file having been opened in the wrong way. If we were to specify w instead of r, the script would run
successfully and myfile.txt would contain a sequence of fifty random characters (remember that the characters of a string can be accessed as if they were elements of an array, just like in C).