3v4l.org

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<?php $a = deg2rad(90); $b =cos($a); var_export($a); echo "\n"; var_export($b); echo "\n".sprintf('%F', $a)."\n";
Output for 5.6.28, 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
1.5707963267948966 6.123233995736766E-17 1.570796
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.6
1.57079632679489655799898 6.12323399573676603586882E-17 1.570796
preferences:
154.38 ms | 402 KiB | 183 Q