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run code in 200+ php & hhvm versions
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<?php $date = new DateTime('2014-12-14'); echo $date->modify('last day of next month')->format('Y-m-d');
based on iISAK
Output for 5.3.0 - 7.2.0
2015-01-31
Output for 5.2.13 - 5.2.17
Warning: DateTime::modify(): Failed to parse time string (last day of next month) at position 9 (o): The timezone could not be found in the database in /in/5K71i on line 5 Fatal error: Call to a member function format() on a non-object in /in/5K71i on line 5
Process exited with code 255.
Output for 5.2.0 - 5.2.12
Fatal error: Call to a member function format() on a non-object in /in/5K71i on line 5
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/5K71i on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_OBJECT_OPERATOR, expecting ',' or ';' in /in/5K71i on line 5
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, expecting ',' or ';' in /in/5K71i on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `','' or `';'' in /in/5K71i on line 5
Process exited with code 255.