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<?php $a = array(); $a['test'] = array(1,2); $b[0] = 3; $a['test'] = $b[0]; $c = $a; $c['test'][1] = 3; print_r($a); print_r($b); print_r($c);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Cannot use a scalar value as an array in /in/ufRPo:10 Stack trace: #0 {main} thrown in /in/ufRPo on line 10
Process exited with code 255.
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: Cannot use a scalar value as an array in /in/ufRPo on line 10 Array ( [test] => 3 ) Array ( [0] => 3 ) Array ( [test] => 3 )

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203.65 ms | 405 KiB | 314 Q