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run code in 150+ php & hhvm versions
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<?php /* Sample Dates : 1981-11-03, 2013-09-04 Expected Result : Difference : 31 years, 10 months, 1 days - See more at: */ class Calculate { public function diff_cal($datetime1, $datetime2) { $interval = date_diff($datetime1, $datetime2); return $interval; } } $cal = New Calculate; $cal->diff_cal('1981-11-03','2013-09-04');
Output for 5.5.24 - 5.6.28, 7.0.0 - 7.1.0
Warning: date_diff() expects parameter 1 to be DateTimeInterface, string given in /in/PP32V on line 10
Output for hhvm-3.12.0
Catchable fatal error: Argument 1 passed to date_diff() must implement interface DateTimeInterface, string given in /in/PP32V on line 10
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.4.45
Warning: date_diff() expects parameter 1 to be DateTime, string given in /in/PP32V on line 10
Output for 5.0.0 - 5.2.17
Fatal error: Call to undefined function date_diff() in /in/PP32V on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/PP32V on line 8
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_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/PP32V on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/PP32V on line 8
Process exited with code 255.