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<?php namespace RN\Pitt { class Amt {} } namespace { $obj = new RN\Pitt\Amt; var_dump($obj); $sub = 'Pitt'; $class = 'Amt'; $name = "RN\\$sub\\$class"; var_dump($name); $obj = new $class; var_dump($obj); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
object(RN\Pitt\Amt)#1 (0) { } string(11) "RN\Pitt\Amt" Fatal error: Uncaught Error: Class "Amt" not found in /in/RbptD:15 Stack trace: #0 {main} thrown in /in/RbptD on line 15
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
object(RN\Pitt\Amt)#1 (0) { } string(11) "RN\Pitt\Amt" Fatal error: Uncaught Error: Class 'Amt' not found in /in/RbptD:15 Stack trace: #0 {main} thrown in /in/RbptD on line 15
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
object(RN\Pitt\Amt)#1 (0) { } string(11) "RN\Pitt\Amt" Fatal error: Class 'Amt' not found in /in/RbptD on line 15
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/RbptD 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_STRING in /in/RbptD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/RbptD on line 3
Process exited with code 255.

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