3v4l.org

run code in 300+ PHP versions simultaneously

@ 2015-02-08T16:57:39Z

<?php

$result = array(
    array(
            'task_id' => 1,
            'name' => 'do dishes',
            'user' => 'bob'
        ),
    array(
            'task_id' => 1,
            'name' => 'do dishes',
            'user' => 'liam'
        ),
    array(
            'task_id' => 2,
            'name' => 'vacuum',
            'user' => 'liam'
        ),
    array(
            'task_id' => 3,
            'name' => 'Take out thrash',
            'user' => 'liam'
        ),
    array(
            'task_id' => 3,
            'name' => 'Take out thrash',
            'user' => 'bob'
        ),
    );
    

function get_arrayvalues_bykeyvalue($array, $key, $key2, $v2)
{
    $ret = array();
    foreach($array as $arr)
    {
        foreach($arr as $k => $v)
        {
            if($arr[$key2] == $v2)
            {
                if($k == $key)
                    $ret[] = $v;   
            }
        }
    }
    $u = array_unique($ret);
    return (sizeof($u) == 1) ? $u[0] : $u;
}

$res = array();
foreach($result as $arr)
{
    foreach($arr as $k => $v)
    {
        if($k == 'user')
            $res[$arr['task_id']][$k] = get_arrayvalues_bykeyvalue($result, $k, 'task_id', $arr['task_id']);
        else
            $res[$arr['task_id']][$k] = $v;
    }
}

print_r($res);

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.14: Array ( [1] => Array ( [task_id] => 1 [name] => do dishes [user] => Array ( [0] => bob [1] => liam ) ) [2] => Array ( [task_id] => 2 [name] => vacuum [user] => liam ) [3] => Array ( [task_id] => 3 [name] => Take out thrash [user] => Array ( [0] => liam [1] => bob ) ) )

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