HOW THE QUIZ WORKS:
Clicking the ‘randomize’ button situated above the reference table generates a new table whereby the function descriptions, function syntaxes, and function return values are randomized. The quiz involves matching the function descriptions, function syntaxes, and function return values to the correct function name. Information relating to the randomization of table cells will be displayed for three seconds, before disappearing.
On a desktop computer, table elements are selected by left-clicking the desired table cell and holding the left click in the mouse down position for one second before releasing the left click. The text inside the table cell will turn red to indicate that the one-second mouse left-click has successfully selected a table cell. To then swap the selected table cell with the target table cell, simply repeat the one-second left mouse-click process on the target cell; the table cells will swap position. To de-select a table cell, simply repeat the one-second left mouse-click process on the original table cell.
To select a table element on a touchscreen device (mobile, tablet), simply touch the desired table cell and maintain the touch for one second before removing your finger from the screen. The text inside the table cell will turn red to indicate that the one-second touch has successfully selected a table cell. To then swap the selected table cell with the target table cell, simply repeat the one-second touch process on the target cell; the table cells will swap position. To de-select a table cell, simply repeat the one-second touch process on the original table cell.
Normal touchscreen scrolling behaviour is exhibited by the cells with a light green background; cells without a light green background will not respond to normal touchscreen scrolling. The table is positioned in such a way that the user can also initiate touchscreen scrolling by swiping to the right or left of the table.
When a row consists of the correct function name, function description, function syntax, and function return value, the background colour of the row will change from ‘transparent’ to ‘khaki’; this provides visual feedback that the row is complete.
Once the entire table is complete, a paragraph of feedback will congratulate the user and provide the following information: date and time of quiz commencement; date and time of quiz completion; and the length of time it took the user to complete the quiz.
VIEWPORT OPTIONS:
PURPOSE:
This webpage serves two purposes:
- It provides a reference table for the PHP filesystem functions, with information extracted and condensed from w3schools.com, phptutorial.info and php.net.
- It enables users to complete a quiz related to the PHP filesystem functions.
USAGE:
For each filesystem function there are four table cells of information: the function name; the function description; the function syntax; and the function return value. There are three layouts available – ‘mobile‘, ‘tablet‘, and ‘desktop‘.
Click the relevant button below to display the PHP filesystem functions reference table, sized appropriately for the desired viewport. A ‘RANDOMIZE‘ button appears above the reference table once the viewport is selected; clicking this button facilitates the commencement of a quiz.
Click the ‘RANDOMIZE‘ button to randomize the functional descriptions, the functional syntaxes, and the functional return information.
| FUNCTION NAME | FUNCTION DESCRIPTION | FUNCTION SYNTAX | FUNCTION RETURN VALUE |
|---|---|---|---|
filectime()
[filectime – Gets inode change time of file] |
This function returns the inode change time of filename. A file is considered changed when its inode data is changed – videlicet, when the permissions, owner, group, or other metadata from the inode is updated. | filectime(filename); |
filectime(): returns the time the file was last changed as a Unix timestamp on success; FALSE and an E_WARNING on failure. |
filegroup()
[filegroup – Gets file group] |
This function returns the file group ID in numerical format. posix_getgrgid() can be used to resolve the returned value to a group name. |
filegroup(filename); |
filegroup(): returns the group ID of filename on success; FALSE and an E_WARNING on failure. |
fileinode()
[fileinode – Gets file inode] |
This function gets the file inode. | fileinode(filename); |
fileinode(): returns the inode number of the file on success; FALSE and an E_WARNING-level error on failure. |
filemtime()
[filemtime – Gets file modification time] |
This function returns the time that filename was last modified; modification occurs when the data blocks of a file are written to. | filemtime(filename); |
filemtime(): returns the time that filename was last modified as a Unix timestamp on success; FALSE and an E_WARNING-level error on failure. |
fileowner()
[fileowner – Gets file owner] |
This function returns the user ID of the file owner in numerical format; posix_getpwuid() can be used to resolve the returned value to a username. |
fileowner(filename); |
fileowner(): returns the user ID of the file owner on success; FALSE and an E_WARNING-level error on failure. |
fileperms()
[fileperms – Gets file permissions] |
This function returns the file permissions for the given filename. | fileperms(filename); |
fileperms(): returns the file permissions as a numeric mode. Lower bits of this mode are the same as that expected by chmod(), but the return value on most platforms will also include information on the type of file given in filename. An E_WARNING-level error is emitted on failure. |
filesize()
[filesize – Gets file size] |
This function returns the size of filename in bytes. | filesize(filename); |
filesize(): returns the size of the file in bytes on success; FALSE and an E_WARNING on failure. *** Since PHP’s integer type is signed and many platforms use 32-bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB. *** |