随机加入两个PHP数组？

One array is

Array ( 
[0] => love 
[1] => home 
[2] => google 
[3] => money 
)

And another is

Array ( 
[0] => 111
[1] => 222
[2] => 333 
[3] => 444 
[4] => 555 
[5] => 666 
[6] => 777 
[7] => 888 
)

I want to make 3th array that looks like this:

Array ( 
[love] => 111
[google] => 222
[home] => 333 
[love] => 444 
[google] => 555 
[money] => 666 
[money] => 777 
[google] => 888 
)

So, it should randomly select some of elements from 1st array and join them to all elements in 2nd.

Try this:

$numbers = Array ( 
[0] => 111
[1] => 222
[2] => 333 
[3] => 444 
[4] => 555 
[5] => 666 
[6] => 777 
[7] => 888 
);

$text = Array ( 
[0] => love 
[1] => home 
[2] => google 
[3] => money 
);
$new_array = array();
foreach($numbers as $value){
   $new_array
}

I was just about to try this then I remembered. Array keys have to be unique -- In other words you cannot have 2 elements in the array with the same key.

array_combine will use one array for the keys and one for the values: http://www.php.net/manual/en/function.array-combine.php

$keys = array ( 
  'love',
  'home',
  'google',
  'money' 
);
$vals = array ( 
 111,
 222,
 333, 
 444, 
 555, 
 666, 
 777, 
 888
);
$output = array_combine($keys, $vals);

This is not random, though. Random requires a loop:

$output = array();
foreach ($keys as $k) {
 $output[$k] = $vals[array_rand($vals)];
}


   /* output: 
Array
(
    [love] => 666
    [home] => 555
    [google] => 222
    [money] => 777
)
*/

Codepad: http://codepad.org/7c55LvXg

Another approach, using shuffle to mix the arrays up. This seems to yield the nicest results:

shuffle($keys);
shuffle($vals);
$output = array();
while (count($keys) > 0 && count($vals) > 0) {
  $key = array_pop($keys);
  $output[$key] = array_pop($vals);
}

/* output: 
Array
(
    [love] => 555
    [money] => 777
    [home] => 444
    [google] => 333
)
*/

Codepad for the last one: http://codepad.org/BpM8RzD3

Like mentioned in all the comments, your final array is not possible. What you could do would be something like this:

finalArray = Array (
  [0] => [google] => 111
  [1] => [home] => 222
  [2] => [google] => 333
  ...
)

You could achvieve this like this (use array_rand for random array value):

$array3 = array();
foreach ($array2 as $element) {
    $array3[] = array($element => $array1[array_rand($array1)]);
}

As mentioned, to create such an Array is not possible, but you can do something like this:

$words = array( 'love', 'home', 'google', 'money' );
$numbers = array( 111, 222, 333, 444, 555, 666, 777, 888 );
$result = array();
foreach($words as $word){
    $result[$word] = array();
}
$wordsmax = count($words) - 1;
foreach($numbers as $number){
    $result[$words[rand(0,$wordsmax)]][] = $number;
}

This could output something like:

Array (
    [love] => Array (
            [0] => 222
            [1] => 888
        )
    [home] => Array (
            [0] => 555
            [1] => 666
            [2] => 777
        )
    [google] => Array (
            [0] => 333
        )
    [money] => Array (
            [0] => 111
            [1] => 444
        )
)