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<?php function addfloats(float $a, float $b):float{ return $a+$b; } var_dump(addFloats("2","4"));
Output for 7.0.0 - 7.0.20, 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 - 8.2.19, 8.3.0 - 8.3.7
float(6)

preferences:
201.91 ms | 404 KiB | 200 Q