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run code in 200+ php & hhvm versions
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<?php gmp_strval( gmp_init("2a345",36), "12" );
Output for 5.6.38 - 7.2.11, 7.3.0rc1 - 7.3.0rc3
Output for 7.3.0alpha1 - 7.3.0beta3
Fatal error: Uncaught Error: Call to undefined function gmp_strval() in /in/U4mul:3 Stack trace: #0 {main} thrown in /in/U4mul on line 3
Process exited with code 255.