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--TEST-- register_tick_function() & closure --FILE-- <?php declare (ticks = 1); $i = 0; register_tick_function(function () use (&$i) { $i++; }); echo "Test\n"; echo "$i\n"; echo "$i\n"; var_dump ($i != 0); echo "$i\n"; echo "Done\n"; ?> --EXPECTF-- Test %d %d bool(true) %d Done