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Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition by Paul Hudson, Andrew Hudson, Matthew Helmke

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Arrays

Working with arrays is no easy task, but PHP makes it easier by providing a selection of functions that can sort, shuffle, intersect, and filter them. As with other functions, there is only space here to choose a selection; this is by no means a definitive reference to PHP’s array functions.

The easiest function to use is array_unique(), which takes an array as its only parameter and returns the same array with all duplicate values removed. Also in the realm of “so easy you do not need a code example” is the shuffle() function, which takes an array as its parameter and randomizes the order of its elements. Note that shuffle() does not return the randomized array; it uses your parameter as a reference and scrambles it directly. The last ...

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