How do I split an array into two arrays using a certain key from each element?

Question

I have this array returned from a query:


Array
(
    [0] => Array
        (
            [name] => 'Kathy'
            [gender] => 'female'
            [age] => 32
        )

    [1] => Array
        (
            [name] => 'Steve'
            [gender] => 'male'
            [age] => 19
        )

    [2] => Array
        (
            [name] => 'Joe'
            [gender] => 'male'
            [age] => 36
        )

    [3] => Array
        (
            [name] => 'Lynn'
            [gender] => 'female'
            [age] => 45
        )

)

I want to split this into two arrays: one containing only the females, and one containing only the males:

Is that possible to do with array functions, or will I have to make two queries (something I really don't want to do!)

Damien Pirsy · Accepted Answer · 2011-12-13 08:59:25Z

2

Quick & dirty:

$females_array = array();
$males_array = array();

foreach($orginal_array as $array)
{
  if($array['gender'] == 'female')
  {
    $females_array[] = $array;
  }
  else
  {
   $males_array[] = $array;
  }
}

answered Dec 13, 2011 at 8:59

Damien Pirsy

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1 Comment

Damien Pirsy Over a year ago

@AgmLauncher if any of the answers provided solves your problem, you should mark it as "accepted" (by clicking the tick mark under the vote count on the top left corner of the answer), so that whoever reaches the answer in the future will spot at once the solution for the question. Thank you, cheers!

lorenzo-s · Accepted Answer · 2011-12-13 08:59:25Z

1

Sure you can! Let's say your array is $people, you can use:

$males = array();
$females = array();
foreach ($people as $person) {
    if ($person['gender'] == 'male') $males[] = $person;
    else $females[] = $person;
}

And then you have men in $males array and women in $females array.

answered Dec 13, 2011 at 8:59

lorenzo-s

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Comments

liquorvicar · Accepted Answer · 2011-12-13 08:59:50Z

1

You could quite easily do it manually.

$males = array();
$females = array();

foreach( $originalArray as $person ) {
    if( $person['gender'] === 'male' ) {
        $males[] = $person;
    } else {
        $females = $person;
    }
}

answered Dec 13, 2011 at 8:59

liquorvicar

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Comments

LeleDumbo · Accepted Answer · 2011-12-13 09:01:56Z

1

Just loop over, checking the value of gender key:

$array_male   = array();
$array_female = array();
foreach ($src_array as $elem) {
  if ($elem['gender'] == 'male') {
    $array_male[] = $elem;
  } else {
    $array_female[] = $elem;
  }
}

answered Dec 13, 2011 at 9:01

LeleDumbo

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Comments

Eugene · Accepted Answer · 2011-12-13 09:13:37Z

1

Wrote a small function for sorting people by gender. You could use switch inside instead of if/else, but since in current question there is only two criteria, then don't see any reason any reason to make code more clustered. This function should work fine for your problem.

function sortByGender( array $people )
{
    $result = array(
        'male'   => array(),
        'female' => array(),
    );

    foreach ( $people as $person )
    {
        if ( 'female' == $person['gender'] )
        {
            $result['female'] = $person;
        }
        else
        {
            $result['male'] = $person;
        }
    }

    return $result;
}

edited Dec 13, 2011 at 9:13

answered Dec 13, 2011 at 9:01

Eugene

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Comments

Rukmi Patel · Accepted Answer · 2011-12-13 08:59:24Z

0

You need to write array function by your own. All Predefined PHP array functions are applicable to single dimension array only.

answered Dec 13, 2011 at 8:59

Rukmi Patel

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Comments

Community · Accepted Answer · 2023-11-21 15:10:29Z

0

You could do this with the array_filter() function.

function check_female($arr) { return ($arr['gender'] == 'female'); }
function check_male($arr) { return ($arr['gender'] == 'male'); }

$males = array_filter($people, "check_male");
$females = array_filter($people, "check_female");

edited Nov 21, 2023 at 15:10

CommunityBot

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answered Dec 13, 2011 at 9:01

animuson♦

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