3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array( array('id' => 1, 'field' => 13, 'value' => 'foo'), array('id' => 3, 'field' => 13, 'value' => 'bar'), array('id' => 4, 'field' => 13, 'value' => 'baz'), array('id' => 2, 'field' => 13, 'value' => 'foo'), array('id' => 1, 'field' => 17, 'value' => 'bar'), array('id' => 2, 'field' => 17, 'value' => 'baz'), ); $result = array(); foreach ($data as $row) { $result[$row['id']][$row['field']] = $row['value']; } var_dump($result);
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 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(4) { [1]=> array(2) { [13]=> string(3) "foo" [17]=> string(3) "bar" } [3]=> array(1) { [13]=> string(3) "bar" } [4]=> array(1) { [13]=> string(3) "baz" } [2]=> array(2) { [13]=> string(3) "foo" [17]=> string(3) "baz" } }

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