3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace 'Blah'; class Foo { const a = 'b'; } echo constant('Blah\Foo::a');
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected ''Blah'' (T_CONSTANT_ENCAPSED_STRING), expecting identifier (T_STRING) or \\ (T_NS_SEPARATOR) or '{' in /in/GAK0E on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING or T_NS_SEPARATOR or '{' in /in/GAK0E on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/GAK0E on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/GAK0E on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GAK0E on line 3
Process exited with code 255.
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