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<?php $arr = [1]; usort($arr, fn($a, $b) => gibberish); $arr = [1,2]; usort($arr, fn($a, $b) => gibberish);
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
Fatal error: Uncaught Error: Undefined constant "gibberish" in /in/QDT38:7 Stack trace: #0 [internal function]: {closure}(1, 2) #1 /in/QDT38(7): usort(Array, Object(Closure)) #2 {main} thrown in /in/QDT38 on line 7
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 Fatal error: Uncaught Error: Undefined constant "gibberish" in /in/QDT38:7 Stack trace: #0 [internal function]: {closure}(1, 2) #1 /in/QDT38(7): usort(Array, Object(Closure)) #2 {main} thrown in /in/QDT38 on line 7
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Use of undefined constant gibberish - assumed 'gibberish' (this will throw an Error in a future version of PHP) in /in/QDT38 on line 7
Output for 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/QDT38 on line 4
Process exited with code 255.

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