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<?php define('IN_DIR', 'Hi'); var_dump(IN_DIR); runkit_constant_redefine('IN_DIR', 'Hello'); var_dump(IN_DIR);
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, 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
string(2) "Hi" Fatal error: Uncaught Error: Call to undefined function runkit_constant_redefine() in /in/0eZHo:5 Stack trace: #0 {main} thrown in /in/0eZHo on line 5
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 string(2) "Hi" Fatal error: Uncaught Error: Call to undefined function runkit_constant_redefine() in /in/0eZHo:5 Stack trace: #0 {main} thrown in /in/0eZHo on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
string(2) "Hi" Fatal error: Call to undefined function runkit_constant_redefine() in /in/0eZHo on line 5
Process exited with code 255.

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