PHP组合数组[关闭]

Question

i have an array:

$ar = array(
 0 => array('id' => '1', 'pname' => 'text'),
 1 => array('id' => '2', 'pname' => 'text2'),
 2 => array('id' => '2', 'pname' => 'text3'),
 3 => array('id' => '3', 'pname' => 'text4'),
 4 => array('id' => '4', 'pname' => 'text5'),
 5 => array('id' => '4', 'pname' => 'text6'),
 6 => array('id' => '4', 'pname' => 'text7'),

);

I want to get array like this:

$result = array(
 0 => array('id' => '1', 'pname' => 'text'),
 1 => array('id' => '2', 'pname' => array('text2', 'text3')),
 3 => array('id' => '3', 'pname' => 'text4'),
 4 => array('id' => '4', 'pname' => array('text5', 'text6', 'text7'))
);

need help! how to iterate first array to get result like second array?

Answer 1

Simple foreach loop should do the trick, eg:

$array_1 = array(
    array('id' => '1', 'pname' => 'text'),
    array('id' => '2', 'pname' => 'text2'),
    array('id' => '2', 'pname' => 'text3'),
    array('id' => '3', 'pname' => 'text4'),
    array('id' => '4', 'pname' => 'text5'),
    array('id' => '4', 'pname' => 'text6'),
    array('id' => '4', 'pname' => 'text7'),
);

$iterated_array = array();
foreach ($array_1 as $value) {
    $iterated_array[$value['id']]['pname'][] = $value['pname'];
}

print_r($iterated_array);