3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Biz { const Bar = 41; } namespace Foo { const Bar = 42; } namespace Foo { use const Biz\Bar; echo Bar; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
41
Output for 5.6.0 - 5.6.28
Fatal error: Cannot use const Biz\Bar as Bar because the name is already in use in /in/0pRZk on line 13
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected 'const' (T_CONST), expecting identifier (T_STRING) or \\ (T_NS_SEPARATOR) in /in/0pRZk on line 13
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CONST, expecting T_STRING or T_NS_SEPARATOR in /in/0pRZk on line 13
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_STRING in /in/0pRZk on line 4
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_STRING in /in/0pRZk on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/0pRZk on line 4
Process exited with code 255.
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72.59 ms | 414 KiB | 5 Q