3v4l.org

run code in 200+ php & hhvm versions
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<?php /** * @see https://community.developer.authorize.net/t5/The-Authorize-Net-Developer-Blog/Precision-Math-with-PHP/ba-p/8368 */ var_dump((0.2 + 1.4) * 10); var_dump(floor(((0.2 + 1.4) * 10))); // Should be 16. But it's 15! var_dump(floor(16.0)); // Using BC Math var_dump(bcadd('0.2', '1.4', 2) * 10); // It's 16 like we would expect it to be.
based on 8KEjK
Output for 5.3.19 - 5.5.28, 5.5.31 - 5.5.33, 5.5.35 - 5.6.12, 5.6.16 - 5.6.19, 5.6.21 - 7.0.4, 7.0.6 - 7.2.0
float(16) float(15) float(16) float(16)
Output for 7.0.5
float(16) float(15) float(16) Fatal error: Uncaught Error: Call to undefined function bcadd() in /in/e9Gch:14 Stack trace: #0 {main} thrown in /in/e9Gch on line 14
Process exited with code 255.
Output for 5.5.29 - 5.5.30, 5.5.34, 5.6.13 - 5.6.15, 5.6.20
float(16) float(15) float(16) Fatal error: Call to undefined function bcadd() in /in/e9Gch on line 14
Process exited with code 255.