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PHP in a Nutshell
book

PHP in a Nutshell

by Paul Hudson
October 2005
Intermediate to advanced content levelIntermediate to advanced
372 pages
11h 35m
English
O'Reilly Media, Inc.
Content preview from PHP in a Nutshell

Name

shuffle()

Synopsis

    bool shuffle ( array &arr )

The shuffle() function takes an array as its parameter, and randomizes the position of the elements in there. It takes its parameter by reference—the return value is either true or false, depending on whether it successfully randomized the array. For example:

    $natural_born_killers = array("lions", "tigers", "bears", "kittens");
    shuffle($natural_born_killers);

One major drawback to using shuffle() is that it mangles your array keys. This is unavoidable, sadly.

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Publisher Resources

ISBN: 0596100671Errata Page