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run code in 200+ php & hhvm versions
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<?php var_dump(bcadd('0', '1e7',4)); sprintf('%.9F','1e7');
Output for 4.3.0 - 7.2.6, 7.3.0rc3 - 7.3.0rc4
string(6) "0.0000"
Output for 7.3.0alpha1 - 7.3.0beta1
Fatal error: Uncaught Error: Call to undefined function bcadd() in /in/f9qBL:4 Stack trace: #0 {main} thrown in /in/f9qBL on line 4
Process exited with code 255.