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<?php class A { function __construct(){ echo "JIUAA".PHP_EOL; } } class B extends A { function B(){ echo "XIABB".PHP_EOL; } } echo new B();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
JIUAA Fatal error: Uncaught Error: Object of class B could not be converted to string in /in/1WJ3q:14 Stack trace: #0 {main} thrown in /in/1WJ3q on line 14
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 JIUAA Fatal error: Uncaught Error: Object of class B could not be converted to string in /in/1WJ3q:14 Stack trace: #0 {main} thrown in /in/1WJ3q on line 14
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; B has a deprecated constructor in /in/1WJ3q on line 9 XIABB Fatal error: Uncaught Error: Object of class B could not be converted to string in /in/1WJ3q:14 Stack trace: #0 {main} thrown in /in/1WJ3q on line 14
Process exited with code 255.
Output for 7.3.32 - 7.3.33
XIABB Recoverable fatal error: Object of class B could not be converted to string in /in/1WJ3q on line 14
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; B has a deprecated constructor in /in/1WJ3q on line 9 XIABB Recoverable fatal error: Object of class B could not be converted to string in /in/1WJ3q on line 14
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; B has a deprecated constructor in /in/1WJ3q on line 9 XIABB Catchable fatal error: Object of class B could not be converted to string in /in/1WJ3q on line 14
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
XIABB Catchable fatal error: Object of class B could not be converted to string in /in/1WJ3q on line 14
Process exited with code 255.

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