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Bug #28305 range problem
Submitted: 2004-05-06 19:44 UTC Modified: 2004-05-06 20:14 UTC
From: anakin at php dot pl Assigned:
Status: Not a bug Package: Math related
PHP Version: 4.3.4 OS: Windows XP
Private report: No CVE-ID: None
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 [2004-05-06 19:44 UTC] anakin at php dot pl
Description:
------------
Using array_rand wirh range function produces incorrect results.

Reproduce code:
---------------
<?php
 srand();
 print_r(array_rand(range(1, 6), 6));
?>

Expected result:
----------------
An array with numbers from 1 to 6 shuffled.

Actual result:
--------------
For example:
Array ( [0] => 4 [1] => 2 [2] => 3 [3] => 1 [4] => 0 [5] => 5 ) 
See key '4'. 0 (zero) does not match range(1, 6).

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 [2004-05-06 20:14 UTC] pollita@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

From the manual:

If you are picking only one entry, array_rand() returns the key for a random entry. Otherwise, it returns an array of keys for the random entries. This is done so that you can pick random keys as well as values out of the array. 

Your "actual results" are what you should expect, arrray KEYS 0 through 5.

 
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