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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

asort()

Synopsis

    bool arsort ( array &arr [, int options] )

The asort() function takes an array as its only parameter, and sorts it by its values while preserving the keys. For example:

    $capitalcities['England'] = 'London';
    $capitalcities['Wales'] = 'Cardiff';
    $capitalcities['Scotland'] = 'Edinburgh';
    asort($capitalcities);
    // sorted by value, so Cardiff, Edinburgh, London

Note that asort() works by reference, directly changing the value you pass in. The return value is either true or false, depending on whether the sorting was successful.

By default, the sort functions sort so that 2 comes before 10. You can change this using the second parameter—see the ksort() reference for how to do this.

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Publisher Resources

ISBN: 0596100671Errata Page