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 mathematical functions, with information extracted and condensed from w3schools.com and php.net.
- It enables users to complete a quiz related to the PHP mathematical functions.
USAGE:
For each mathematical 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 mathematical 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 |
|---|---|---|---|
atanh()
[Inverse hyperbolic tangent] |
Returns the inverse hyperbolic tangent of a number. | atanh(number); |
Returns the inverse hyperbolic tangent of number. Return type: float. |
base_convert()
[Convert a number between arbitrary bases] |
Converts a number from one number base to another number base. Digits in numbers with a base higher than 10 will be represented by the letters a – z, with a meaning 10, b meaning 11 … and z meaning 35. | base_convert(number, frombase, tobase);[Both frombase and tobase have to be between 2 and 36, inclusive.] |
Returns a string containing number represented in base tobase. |
bindec()
[Binary to decimal] |
Converts a binary number to a decimal number. | bindec(binary_string);[The parameter value must be a string.] |
Returns the decimal value of binary_string, as a float/integer. |
ceil()
[Round fractions up] |
Rounds a number up to the nearest integer. | ceil(number); |
Returns number rounded up to the nearest integer. Return type: float. |
cos()
[Cosine] |
Returns the cosine of a number. | cos(number); |
Returns the cosine of number as a float in the range -1 to 1. |
cosh()
[Hyperbolic cosine] |
Returns the hyperbolic cosine of a number. This is equivalent to (exp(number) + exp(- number))/2. |
cosh(number); |
Returns the hyperbolic cosine of number as a float. |
decbin()
[Decimal to binary] |
Converts a decimal number to a binary number. | decbin(number); |
Returns a string that represents the binary value of number. |