3v4l.org

run code in 300+ PHP versions simultaneously
<?php $handlers = array( array('ids' => array(1, 2, 3)), array('ids' => array(4, 5, 6)), array('ids' => array(7, 8, 9)), ); $ids = array(); foreach ($handlers as $handler) { $ids += $handler['ids']; } var_dump($ids);

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