how to put a different objects inside each array element of an array in php?

Question

I have two arrays, e.g

$mainArray = array('a','b','c','d','e','f','g');

$subArray = it contains an array of objects e.g

array( objec1, objec2, object3, object4) ...

within each of the objects, holds the value that matches one of the keys in the $mainArray.

my Question now is, how am i gonna match and put the correct objects to the mainArray, so that it should appear like this e.g

$mainArray = array('a'=> array(object3,object2), 'b' => array(object4,object1));

How do you access this value that is stored in each object? In other words, what test can be done to know that object3 and object2 belong to a? — Crackertastic
– Crackertastic, Commented Dec 19, 2013 at 3:12
@Crackertastic, need to iterate via foreach, each of the object in order to get the value like $val->keyOfMainArray , it seem complicated the way i see it — sasori
– sasori, Commented Dec 19, 2013 at 3:13

zerkms · Accepted Answer · 2013-12-19 03:16:13Z

2

$result = array();
foreach ($subArray as $obj) {
    if (!isset($result[$obj->keyOfMainArray])) {
        $result[$obj->keyOfMainArray] = array();
    }

    $result[$obj->keyOfMainArray][] = $obj;
}

answered Dec 19, 2013 at 3:16

zerkms

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Rezigned · Accepted Answer · 2013-12-19 03:19:13Z

1

Assuming val is your object's property

$mainArray = array('a','b','c','d','e','f','g');
$subArray  = array(...);
$result    = array();

foreach($subArray as $object) {
    $result[$object->val][] = $object;
}

Example result

Array
(
    [a] => Array
        (
            [0] => stdClass Object
                (
                    [val] => a
                )

            [1] => stdClass Object
                (
                    [val] => a
                )

        )

    [b] => Array
        (
            [0] => stdClass Object
                (
                    [val] => b
                )

        )

)

answered Dec 19, 2013 at 3:19

Rezigned

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