fetching one value from each key in an associated array

Question

I have the following array

array(
    'messages' => array(
        0 => array(
            'id' => '3',
            'subject' => 'what did you say last night?',
            'message' => 'your mother wai',
            'from' => '13',
            'to' => '1',
            'from_viewed' => '0',
            'to_viewed' => '0',
            'from_deleted' => '0',
            'to_deleted' => '0',
            'from_vdate' => NULL,
            'to_vdate' => NULL,
            'from_ddate' => NULL,
            'to_ddate' => NULL,
            'created' => '2016-05-14 14:02:12',
        ) ,
        1 => array(
            'id' => '2',
            'subject' => 'this is new',
            'message' => 'hello guy',
            'from' => '11',
            'to' => '1',
            'from_viewed' => '0',
            'to_viewed' => '0',
            'from_deleted' => '0',
            'to_deleted' => '0',
            'from_vdate' => NULL,
            'to_vdate' => NULL,
            'from_ddate' => NULL,
            'to_ddate' => NULL,
            'created' => '2016-05-14 13:59:56',
        ) ,
        2 => array(
            'id' => '1',
            'subject' => 'hello boy.',
            'message' => 'i love this too much . what do you think about making this happen for tomorrow? already then . good bye',
            'from' => '11',
            'to' => '1',
            'from_viewed' => '0',
            'to_viewed' => '0',
            'from_deleted' => '0',
            'to_deleted' => '0',
            'from_vdate' => NULL,
            'to_vdate' => NULL,
            'from_ddate' => NULL,
            'to_ddate' => NULL,
            'created' => '2016-05-14 13:54:02',
        ) ,
    ) ,
)

All i want to do is to take the 'FROM' value of every key in the array(in this case it is - 13, 11 ,11) and then send them to the database to retrieve information like their name and avatar , in codeigniter.

UPDATE

I TRIED THE FOLLOWING AND IT GAVE ME 11,11,13, (with a comma at the back).

 $from  =  $messages['messages'];


      for ($col = 0; $col < 3; $col++) {
        echo $messages['messages'][$col]['from'].",";
      }

Besides , i dont want to determine how many values it should echo. I want it to echo as long as it exists.

you put here var_dump() array. Please provide var_export() array, so that we can test — Rejoanul Alam
– Rejoanul Alam, Commented May 14, 2016 at 13:48

Rejoanul Alam · Accepted Answer · 2016-05-14 14:13:19Z

2

you may use this

$t = array(
    'messages' => array()
 )
 /// your array ......

$from = '';
foreach($t['messages'] as $k => $m){
    if($k == 0){
        $from = $m['from'];
    }else{
        $from .= ','.$m['from'];
    }
}
echo $from;

It will output as 13,11,11. But if you need array of those values then you may use following

$from = array();
foreach($t['messages'] as $k => $m){
        $from[] = $m['from'];

}
print_r($from);

answered May 14, 2016 at 14:13

Rejoanul Alam

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5 Comments

Tpojka Over a year ago

Vote up. Alternatively, you can offer $from[$k] to have binded concrete message key.

Rich fiifi Over a year ago

thanks but this ` $t = array( 'messages' => array() ); /// your array ...... $from = $messages['messages']; foreach($t['messages'] as $k => $m){ $from[] = $m['from']; } print_r($from); ` only prints an empty array - array();

Rich fiifi Over a year ago

the following one prints 13,13.

$t = array(                 'messages' => array()              );              /// your array ......              $from = $messages['messages'][0]['from'];             foreach($t['messages'] as $k => $m){                 if($k == 0){                     $from = $m['from'];                 }else{                     $from .= ','.$m['from'];                 }             }              echo $from;              print_r($from);

. would be nice to combine the value into an array so i can send it to the database for processing please. thanks

Rejoanul Alam Over a year ago

you may use first solution and then explode the result to make array. $final_arr = explode(',',$from);

Rich fiifi Over a year ago

WORKED NOW. HAD TO DO A FEW TWEAKING!

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