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run code in 150+ php & hhvm versions
Bugs & Features
<?php $d1 = '2014-10-25 00:00:00'; $d2 = '2014-10-26 00:00:00'; $dt1 = new DateTime($d1); $dt2 = new DateTime($d2); var_dump ($dt2->diff($dt1)->d); var_dump (strtotime($d2)-strtotime($d1));
based on 2GGUi
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
int(1) int(86400)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.0 - 5.2.17
Fatal error: Call to undefined method DateTime::diff() in /in/YGPNE on line 7
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/YGPNE on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/YGPNE on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/YGPNE on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YGPNE on line 7
Process exited with code 255.