Random select value from complex array in php

Question

I have array like below

array(1) {
  ["data"]=>
  array(6) {
    [0]=>
    array(2) {
      ["name"]=>
      string(10) "Wang"
      ["id"]=>
      string(9) "500011929"
    }
    [1]=>
    array(2) {
      ["name"]=>

      string(17) "Singh"
      ["id"]=>
      string(9) "500033614"
    }
    [2]=>
    array(2) {
      ["name"]=>
      string(9) "Adam"
      ["id"]=>
      string(9) "5014177"
    }
    [3]=>
    array(2) {
      ["name"]=>
      string(23) "Siva"
      ["id"]=>
      string(9) "5036644"
    }
    [4]=>
    array(2) {
      ["name"]=>
      string(11) "Chu"
      ["id"]=>
      string(9) "5044111"
    }
    [5]=>
    array(2) {
      ["name"]=>

      string(18) "Matta"
      ["id"]=>
      string(9) "56657897"
   }
  }
}

I need to select randomly 2 value from this array I have tried with below code I am getting null.

$mylist = $facebook->api('/me/friends');
$rand_keys = array_rand($mylist , 2);
var_dump($mylist[$rand_keys[]]);

Please help me to solve this issue. Thanks in advance!

Markish · Accepted Answer · 2010-09-09 11:28:45Z

1

Make use of the PHP's built-in function shuffle to do this easily

$my_friends = $facebook->api('/me/friends');
$temp= $my_friends ['data'];
shuffle($temp);
$mylist=  array_slice($temp,0,2);

answered Sep 9, 2010 at 11:28

Markish

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Comments

Jim · Accepted Answer · 2010-09-07 16:58:35Z

0

Try this instead:

$rand_keys = array_rand($mylist['data'], 2);
var_dump($mylist['data'][$rand_keys[0]]);
var_dump($mylist['data'][$rand_keys[1]]);

as just using a [] generally means you are adding a new index to the array.

If you want to loop it:

foreach ($rand_keys as $key) {
    var_dump($mylist['data'][$key]);
}

Should give you something to go off of.

EDIT

Just saw this was a multi-dimensional array contained in "data", see updated code above. Not sure if that is the issue, but seems like it is.

edited Sep 7, 2010 at 16:58

answered Sep 7, 2010 at 16:35

Jim

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9 Comments

Jim Over a year ago

What does a var_dump of $rand_keys provide you?

Elankeeran Over a year ago

I am resulting NULL $rand_keys = array_rand($mylist , 2); var_dump($rand_keys);

Jim Over a year ago

When you do a var_dump of $mylist this gives you the array you posted above? The only way null would come out is if you give a non-array to the array_rand function. So I would verify that $mylist is actually an array and not a serialized string or just a string.

Elankeeran Over a year ago

its the array from facebook api $mylist = $facebook->api('/me/friends'); $rand_keys = array_rand($mylist , 2); foreach ($rand_keys as $key) { var_dump($mylist['data'][$key]); }

Jim Over a year ago

You seem to be missing some major points. null will be returned by array_rand if the first parameter is not a valid array. Verify that $mylist is actually an array and not an object or a string version of an array. This will not work on something other then a compatible PHP array variable.

|

Fawad Ghafoor · Accepted Answer · 2011-03-16 17:26:55Z

$myallfriend=$facebook->api( array( 'method' => 'fql.query', 'query' => "SELECT uid1 FROM friend WHERE uid2 = '$user'" ) ); foreach($myallfriend as $status_a) { $status_sql[] = $status_a['uid1'];} $myarray=array_rand($status_sql,3); echo $status_sql[$myarray[0]]; echo $status_sql[$myarray[1]]; echo $status_sql[$myarray[2]]; for($i=0;$i<3;$i++){

$attachment = array( 'message' => 'Beet Me If U Can !', 'name' => "Crazy Cricketers!", 'link' => "http://apps.facebook.com/crazycricketers", 'description' => $name." has Scored ".$_GET['score']." Runs of " .$currentballs." balls at a strike rate of ". $strikerate." Challenge Your Friend !", 'picture'=>"http://www.roohware.net/products/trivia/images/trivia.jpg");

$facebook->api('/'.$status_sql[$myarray[$i]].'/feed', 'POST', $attachment); echo"publish on".$status_sql[$myarray[$i]]."
"; }

any 1 who want this,working 100% [email protected]

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