Deck 5: Working With Files and Directories

Question 1

You use the createDir() function to create a new directory.

Answer 1

False

Question 2

You can use the opendir() function to return the file and directory names from the open directory.

Answer 2

False

Question 3

An additional form attribute, enctype, with a value of "multipart/form-data" must be used to upload files.

Answer 3

True

Question 4

The directory pointer is a way of keeping track of where you are in a directory.

Question 5

A handle is a special type of variable that PHP uses to represent a resource, such as a file or directory.

Question 6

The file_exists() function determines whether a file or directory exists.

Question 7

You can specify the maximum size of an uploaded file using MAX_FILE SIZE as a hidden input field below the file input field.

Question 8

PHP recognizes two types of files: binary and text.

Question 9

The chdir() function changes to the name of the specified directory.

Question 10

The fileperms() function allows the user to read the permissions associated with a particular file.

Question 11

The three levels of permissions for files and directories are Read, Write, and Delete.

Question 12

The scandir() function returns an indexed array containing the names of files and directories in a specified directory.

Question 13

Both the echo() and print() statements send data to an input stream.

Question 14

PHP provides the chper() function for changing the permission of a file from within PHP.

Question 15

You use the fopen() function to open a handle to a file stream.

Question 16

The scandir() function sorts the returned entries in the order in which they are stored by the operating system.

Question 17

The three levels of access for files and directories are User, Group, and Other.

Question 18

The file_write_contents() function writes a text string as a file.

Question 19

You append the \n carriage return escape sequence to the end of a line to identify the end of a line on a UNIX/Linux platform.

Question 20

The move_uploaded_file() function moves the uploaded file from its temporary location to the permanent destination.

Question 21

The second digit in the file permission code assigns permissions to the ____.

A) group
B) other
C) user
D) group / user

Question 22

The a+ mode argument opens the specified file for reading only and places the file pointer at the beginning of the file.

Question 23

The ____ function returns an indexed array containing the names of files and directories in the specified directory.

A) readdir()
B) opendir()
C) scandir()
D) closedir()

Question 24

When a text file contains a single block of text, the ____ function would read the entire contents of the file into a string.

A) file_read_contents()
B) file_open_contents()
C) file_extract_contents()
D) file_get_contents()

Question 25

When you are finished with a file stream, you use the statement fopen($handle); to ensure that the file doesn't keep consuming space in your computer's memory.

Question 26

When a form is posted, information from the uploaded file is stored in the ____ autoglobal array.

A) $_FILES[]
B) $_UPLOAD[]
C) FILE_UPLOAD[]
D) UPLOAD_FILES[]

Question 27

To prevent multiple users from modifying a file simultaneously, you need to use the file_lock() function.

Question 28

The syntax for the copy_file() function is copy_file(source, destination).

Question 29

If you want to open a file for reading and writing and place the file pointer at the end of the file, you use a mode argument of "a+".

Question 30

The ____ constant instructs PHP to append data to any existing contents in a specified filename instead of overwriting it.

A) FILE_APPEND
B) FILE_ADD
C) FILE_INCLUDE
D) APPEND_TO_FILE

Question 31

You can use the delete() function to delete files.

Question 32

When you are finished working with a file stream, you use the ____ function to ensure that the file does not keep taking up space in your computer's memory.

A) file_close()
B) exit_file()
C) close_stream()
D) fclose()

Question 33

The ____ function reads the contents of a text file that stores each individual line as an element of an indexed array.

A) file()
B) get_file()
C) read_file()
D) open_file()

Question 34

You would use the file_put_contents() function to quickly replace the contents of a file or append data to the end of an existing file.

Question 35

You can use the fwrite() function to incrementally write data to a text file.

Question 36

Some operating systems always list two directory entries named "." and "..", which refer to the current directory and the directory that contains the current directory.

Question 37

One way to move a file in PHP is to copy with file with the copy() function, and then delete the original file with the unlink() function.

Question 38

Using a value of ____ for the mode argument of the fopen() function opens the specified file for reading and writing and places the file pointer at the end of the file.

A) w
B) r
C) r+
D) a+

Question 39

On a Macintosh platform, you append the ____ carriage return escape sequence to the end of the line.

A) \n
B) \r
C) \rn
D) \nr

Question 40

The ____ function writes a text string and creates the file if it does not exist.

A) file_write_contents()
B) file_create_contents()
C) file_put_contents()
D) file_make_contents()

Question 41

A(n) ____________________ file is a series of characters or bytes for which PHP attaches no special meaning.

Question 42

The ____ argument of the fwrite() function allows you to specify the maximum number of bytes that should be written.

A) size
B) length
C) range
D) max_length

Question 43

What function is used to delete files?

A) delete()
B) delete_file()
C) unlink()
D) del_file()

Question 44

What function returns a line, strips any XHTML tags the line contains, and then moves the file pointer to the next line?

A) fgetcsv(handle, length[, delimiter, string_enclosure])
B) stream_get_line)$handle, length, delimiter)
C) fgetss($handle, length[, allowed_tags])
D) fgets(handle[, length])

Question 45

Because the fopen() function must be used with the ____ function, you can specify what type of operations can be performed on the file and where and how the data will be written.

A) file_put_contents()
B) file_get_contents()
C) readfile()
D) fwrite()

Question 46

The operational constant of the flock() function that opens the file with an exclusive lock for writing is the ____.

A) LOCK_EX
B) LOCK_SH
C) LOCK_NB
D) LOCK_UN

Question 47

The owner of a resource, such as a file or directory, can usually grant ____________________ to access the resource.

Question 48

What function is used to copy the names of the files in a directory to an array?

A) readdir()
B) copydir()
C) scandir()
D) list_dir()

Question 49

Two arguments, source and destination, are used with the ____ function.

A) copy()
B) copy_file()
C) file_copy()
D) dup_file()

Question 50

The ____ function should be used before deleting files and directories to determine if the file or directory name exists.

A) file_exists()
B) dir_exists()
C) file_dir_exists()
D) dir_file_exists()

Question 51

Every time you use the ____ function, the file pointer moves to the next character in the file.

A) fgetc()
B) fopen()
C) fclose()
D) fileread()

Question 52

With the exception of the ____ function, each time you call a function that iterates through a text file, the file pointer automatically moves to the next line in the text file.

A) fopen()
B) fclose()
C) fgetc()
D) feof()

Question 53

What function returns a value of true when the file pointer reaches the end of the file?

A) end_of_file()
B) feof()
C) eof()
D) file_end()

Question 54

A(n) ____________________ is assumed to have only printable characters and a small set of control or formatting characters.

Question 55

PHP provides the ____________________ function for changing the permissions of a file within PHP.

Question 56

Instead of reading a large text file into PHP, you can use the ____ to iterate through a text file.

A) file handler
B) file pointer
C) data array
D) mode operator

Question 57

The ____ function only works when there are "." and ".." are the only two entries present in a directory.

A) del_directory()
B) rmdir()
C) delete_directory()
D) remove_directory()

Question 58

The two arguments required for the rename() function are ____.

A) previous_name,new_name
B) old_name,new_name
C) current_name,new_name
D) previous_name,current_name

Question 59

What function returns a line that ends with a specified delimiter and moves the file pointer to the next line?

A) fgetcsv(handle, length[, delimiter, string_enclosure])
B) stream_get_line($handle, length, delimiter)
C) fgets(handle[, length])
D) fgetss(handle, length[, allowed_tags])

Question 60

What function returns a line and moves the file pointer to the next line?

A) fgetc($handle)
B) fgetcsv(handle, length[, delimiter, string_enclosure])
C) fgets($handle[, length])
D) fgetss(handle, length[, allowed_tags])

Question 61

A(n) ____________________ link, which is identified with the is_link() function, is a reference to another file elsewhere on the system, not a file itself.

Question 62

Using a four-digit ____________________ (base 8) code will ensure that proper permissions are assigned.

Question 63

The ____________________ function incrementally writes data to a text file and returns the number of bytes written to the file.

Question 64

The PHP ____________________ function will read a file from a disk and send it directly to the Web browser.

Question 65

An input field of ____________________ within a form presents the user with a file selection control.

Question 66

When downloading a file with PHP, you must provide the appropriate XHTML ____________________ to tell the client Web browser that a response contains more than just a Web page.

Question 67

Write permission normally implies ____________________ permission as well.

Question 68

The ____________________ function determines whether a filename specifies a directory.

Question 69

To iterate through the entries in a directory, you open a ____________________ to the directory with the opendir() function.

Question 70

The ____________________ function can be used to return the names of the entries in the directory.

Question 71

In PHP, files are uploaded through ____________________.

Question 72

The currently selected record in a directory listing can be accessed using the directory ____________________.

Question 73

The ____________________ function reads the file and directory names from an open directory.

Question 74

The ____________________ function returns a value of TRUE if it successfully locks a file and FALSE if it fails.

Question 75

Adding a "b" to the end of the method argument of the fopen() function forces the file to be opened in ____________________ mode.

Question 76

Information about an uploaded file, such as error codes, temporary name, name, size, and type would be found in the ____________________ autoglobal array.

Question 77

The ____________________ function is an alias for the fwrite() function.

Question 78

A new directory can be created using the ____________________ function.

Question 79

The move_uploaded_file() function is used to move an uploaded file from its ____________________ location to the permanent destination.

Question 80

A ____________________ input field may be added to a form to set the maximum allowable upload file size.