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<?php class A { function bar() { return 'B'; } } class B {} $foo = new A(); $obj = new $foo->bar(); var_dump($obj);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined property: A::$bar in /in/lpN1T on line 12 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/lpN1T:12 Stack trace: #0 {main} thrown in /in/lpN1T on line 12
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined property: A::$bar in /in/lpN1T on line 12 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/lpN1T:12 Stack trace: #0 {main} thrown in /in/lpN1T on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.3.33, 7.4.0 - 7.4.33
Notice: Undefined property: A::$bar in /in/lpN1T on line 12 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/lpN1T:12 Stack trace: #0 {main} thrown in /in/lpN1T on line 12
Process exited with code 255.
Output for 7.3.32
Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/lpN1T:12 Stack trace: #0 {main} thrown in /in/lpN1T on line 12
Process exited with code 255.
Output for 5.2.6 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined property: A::$bar in /in/lpN1T on line 12 Fatal error: Class name must be a valid object or a string in /in/lpN1T on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.5
Notice: Undefined property: A::$bar in /in/lpN1T on line 12 Fatal error: Class name must be a valid object or a string in /in/lpN1T on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Notice: Undefined property: bar in /in/lpN1T on line 12 Fatal error: Cannot instantiate non-existent class: in /in/lpN1T on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Notice: Undefined property: bar in /in/lpN1T on line 12 Fatal error: Cannot instantiate non-existent class: in /in/lpN1T on line 12

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