Array destructuring
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<?php

[$a, $b] = [$c, $d];
[, $a, , , $b, ,] = $foo;
[, [[$a]], $b] = $bar;
['a' => $b, 'b' => $a] = $baz;
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[$a, $b] = [$c, $d];
[, $a, , , $b, ] = $foo;
[, [[$a]], $b] = $bar;
['a' => $b, 'b' => $a] = $baz;