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<?php $x = new DateTime(); var_dump($x + 20); $x = gmp_add(10, 20); var_dump(30 + $x);
based on uKPPb
Output for 5.6.8 - 5.6.20, 5.6.28 - 7.0.5, 7.0.20 - 7.2.0
Notice: Object of class DateTime could not be converted to int in /in/jrQh8 on line 5 int(21) object(GMP)#1 (1) { ["num"]=> string(2) "60" }
Output for 7.0.6
Notice: Object of class DateTime could not be converted to int in /in/jrQh8 on line 5 int(21) Fatal error: Uncaught Error: Call to undefined function gmp_add() in /in/jrQh8:8 Stack trace: #0 {main} thrown in /in/jrQh8 on line 8
Process exited with code 255.
Output for 5.3.21 - 5.3.29, 5.5.35, 5.6.21
Notice: Object of class DateTime could not be converted to int in /in/jrQh8 on line 5 int(21) Fatal error: Call to undefined function gmp_add() in /in/jrQh8 on line 8
Process exited with code 255.
Output for 5.4.11 - 5.5.34
Notice: Object of class DateTime could not be converted to int in /in/jrQh8 on line 5 int(21) int(35)