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<?php $data = [ 'c' => [ [ 'q' => 1, ], [ 'q' => 2, ], [ 'q' => 3, ], ] ]; $before = $data; foreach ($data['c'] as &$c) { } $after = $data; var_dump($before === $after); foreach ($data['c'] as $c) { } $after = $data; var_dump($before === $after);
Output for git.master_jit, git.master, rfc.property-hooks
bool(true) bool(false)

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