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<?php var_dump( array_intersect([3, 4, 8], [4]) );
Output for 5.4.45, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(1) { [1]=> int(4) }
Output for 5.2.6
Parse error: syntax error, unexpected '[', expecting ')' in /in/qrLW6 on line 4
Process exited with code 255.

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