How can I get random data from a multidimensional array? [duplicate]

Try the following shuffle function.Hope it would help you.

function shuffle_assoc($list) { 
  if (!is_array($list)) return $list; 

  $keys = array_keys($list); 
  shuffle($keys); 
  $random = array(); 
  foreach ($keys as $key) { 
    $random[] = $list[$key]; 
  }
  return $random; 
} 

$arr = array();
$arr[] = array('id' => 50, 'foo' => 'hello');
$arr[] = array('id' => 17, 'foo' => 'byebye');
$arr[] = array('id' => 19, 'foo' => 'foo');

print_r(shuffle_assoc($arr));

You could simply use shuffle()

bool shuffle ( array &$array )

This function shuffles (randomizes the order of the elements in) an array. It uses a pseudo random number generator that is not suitable for cryptographic purposes.

shuffle($array); // Shuffles your array keys randomly every time.

shuffle() will be a better option in getting out the random value from multi dimensional array.

Reference: http://php.net/manual/en/function.shuffle.php

shuffle() Example:

The shuffle() function randomizes the order of the elements in the array.

This function assigns new keys for the elements in the array. Existing keys will be removed

<?php
$my_array = array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow","e"=>"purple");

shuffle($my_array);
print_r($my_array);
?> 

Output:

Array ( [0] => red [1] => yellow [2] => green [3] => blue [4] => purple )
//The Output will keep shuffling if you refresh the browser.