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 array functions, with information extracted and condensed from w3schools.com and php.net.
It enables users to complete a quiz related to the PHP array functions.
USAGE:
For each array 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 array 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.
Once the randomization of function descriptions, function syntaxes, and function return values has taken place, an ‘AUTO COMPLETE‘ button will appear above a button that facilitates a ‘RETURN TO VIEWPORT SELECTION‘. Clicking the ‘AUTO COMPLETE‘ button initiates a ‘self-completing quiz’ effect: the table cells will be correctly rearranged before your eyes in real-time. This ‘self-completion in real-time’ lasts approximately one-and-a-half minutes. You can rearrange the cells in any order that you like before clicking the ‘AUTO COMPLETE‘ button – the quiz will still ‘complete itself’.
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
array_udiff()
[Computes the difference of arrays by using a callback function for data comparison]
Computes the difference in arrays by using callback_function for data comparison.
[callback_function must return an integer less than, equal to, or greater than 0, depending on whether the first argument is respectively less than, equal to, or greater than the second.]
array_udiff(): returns an array containing all the values in array1 that are not present in any of the other arguments.
array_uintersect_assoc()
[Computes the intersection of arrays with additional index check, compares data by a callback function]
Computes the intersection of arrays with additional index check, comparing data via callback_function.
[callback_function must return an integer that is less than, equal to, or greater than zero, depending on whether the first value is considered to be respectively less than, equal to, or greater than the second argument.]
array_uintersect_assoc(): returns an array containing all the values in array1 that are present in all other arguments.
array_uintersect_uassoc()
[Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions]
Computes the intersection of arrays with additional index check, comparing data and indexes by separate value_compare and key_compare functions.
[The callback functions must return an integer less than, equal to, or greater than 0, depending on whether argument one is considered respectively to be less than, equal to, or greater than argument two.]
array_uintersect_uassoc(): returns an array containing all the values of array1 that are present in all other arguments.
array_uintersect()
[Computes the intersection of arrays, compares data by a callback function]
Computes the intersection of arrays, comparing data via callback_function.
[callback_function must return an integer less than, equal to, or greater than 0, depending on whether argument one is considered respectively to be less than, equal to, or greater than argument two.]
array_uintersect(): returns an array containing all the values of array1 that are present in all other arguments.
array_unique()
[Removes duplicate values from an array]
Returns a new array, consisting of uniqueinput values. Keys are preserved, and if multiple elements are considered equal according to the specified sort_flags then the key and value of the first element will be retained.
Forty-year-old father of three wonderful children [William, Seth, and Alyssa]. Works as an Assistant Technical Officer in the Sterile Services Department of Treliske Hospital, Cornwall. Enjoys jogging, web design, learning programming languages, and supporting Arsenal FC. Obtained a BA degree in English from the University of Bolton in 2008, and has continued to gain qualifications in a diverse range of subjects thereafter.
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