PYTHON array_rand

is this article helpful?
|
Python replacement for PHP's array_rand [ edit | history ] 
import random

# for num_req == 1
result = random.choice(input.keys())

# for num_req > 1
result = random.sample(input.keys(), num_req)

# for arrays, replace "input.keys()" with "range(len(input))"

PHP array_rand

PHP original manual for array_rand [ show | php.net ]

array_rand

(PHP 4, PHP 5)

array_rand — Pick one or more random entries out of an array

Description

mixed array_rand ( array $input [, int $num_req= 1 ] )

array_rand() is rather useful when you want to pick one or more random entries out of an array.

Parameters

input

The input array.

num_req

Specifies how many entries you want to pick - if not specified, defaults to 1.

Return Values

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.

Examples

Example #1 array_rand() example

<?php
srand((float) microtime() * 10000000);
$input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank");
$rand_keys = array_rand($input, 2);
echo $input[$rand_keys[0]] . "\n";
echo $input[$rand_keys[1]] . "\n";
?>

Notes

Note: As of PHP 4.2.0, there is no need to seed the random number generator with srand() or mt_srand() as this is now done automatically.

See Also

Array Functions
PHP Manual