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<?php $array = array('bla' => 1, 'blo' => 1, 'bli' => 1); $array['bla']++; $array['bli'] = $array['bli'] + 1; $array['blo'] = $array['blo']++; var_dump($array);
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 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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(3) { ["bla"]=> int(2) ["blo"]=> int(1) ["bli"]=> int(2) }

preferences:
245.43 ms | 406 KiB | 456 Q