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run code in 150+ php & hhvm versions
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<?php $a='1111111111111111'; $b='2222222222222222'; $c=gmp_add($a,$b); echo gmp_strval($c); ?>
Output for 5.4.0 - 5.5.34, 5.6.7 - 5.6.20, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.5, 7.0.12 - 7.1.0
3333333333333333
Output for 7.0.6
Fatal error: Uncaught Error: Call to undefined function gmp_add() in /in/RODrV:4 Stack trace: #0 {main} thrown in /in/RODrV on line 4
Process exited with code 255.
Output for 5.0.0 - 5.3.29, 5.5.35, 5.6.21
Fatal error: Call to undefined function gmp_add() in /in/RODrV on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: gmp_add() in /in/RODrV on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: gmp_add() in /in/RODrV on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: gmp_add() in /in/RODrV on line 4