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<?php $test[4] = 1; $test[4]["test"] = 1; var_dump( $test );
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Fatal error: Uncaught Error: Cannot use a scalar value as an array in /in/QRNCA:5 Stack trace: #0 {main} thrown in /in/QRNCA on line 5
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Cannot use a scalar value as an array in /in/QRNCA on line 5 array(1) { [4]=> int(1) }

preferences:
101.66 ms | 1640 KiB | 4 Q