Php array rand
From w3cyberlearnings
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PHP function array_rand
This function returns one or more random key from a given array.
Syntax array_rand
- array: array input
- number: how many random keys to be return
array_rand(array, number);
Example 1
<?php $president = array( 'George Washington' => 'April 30, 1789', 'John Adams' => 'March 4, 1797', 'Thomas Jefferson' => 'March 4, 1801', 'James Madison' => 'March 4, 1809', 'James Monroe' => 'March 4, 1817', 'Andrew Jackson' => 'March 4, 1829'); print_r(array_rand($president, 2)); ?>
Output
- Output is random, you may get a different result
Array ( [0] => George Washington [1] => Thomas Jefferson )
Example 2
<?php
$president = array(
'George Washington' => 'April 30, 1789',
'John Adams' => 'March 4, 1797',
'Thomas Jefferson' => 'March 4, 1801',
'James Madison' => 'March 4, 1809',
'James Monroe' => 'March 4, 1817',
'Andrew Jackson' => 'March 4, 1829');
for ($i = 0; $i < 3; $i++) {
$count = 0;
$select = array_rand($president, 2);
echo $i . ' : ';
echo $select[0];
echo '--';
echo $select[1];
echo '<br/>';
}
?>
Output
- You may have a different result according to the random key generate.
0 : George Washington--Andrew Jackson 1 : James Monroe--Andrew Jackson 2 : James Madison--Andrew Jackson
Related Links
- array_change_key_case
- array_chunk
- array_combine
- array_count_values
- array_diff_assoc
- array_diff_key
- array_diff_uassoc
- array_diff_ukey
- array_diff
- array_fill_keys
- array_fill
- array_filter
- array_flip
- array_intersect_assoc
- array_intersect_key
- array_intersect_uassoc
- array_intersect_ukey
- array_intersect
- array_key_ exists
- array_keys
