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<?php function i(){(0);}function m($f,$a){return array_map($f,0);}echo implode(m("",m("",("i"("",m("%n",("")))))));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, function "%n" not found or invalid function name in /in/U5FfZ:2 Stack trace: #0 /in/U5FfZ(2): array_map('%n', 0) #1 /in/U5FfZ(2): m('%n', '') #2 {main} thrown in /in/U5FfZ on line 2
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 TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, function "%n" not found or invalid function name in /in/U5FfZ:2 Stack trace: #0 /in/U5FfZ(2): array_map('%n', 0) #1 /in/U5FfZ(2): m('%n', '') #2 {main} thrown in /in/U5FfZ on line 2
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback, function "%n" not found or invalid function name in /in/U5FfZ:2 Stack trace: #0 /in/U5FfZ(2): array_map('%n', 0) #1 /in/U5FfZ(2): m('%n', '') #2 {main} thrown in /in/U5FfZ on line 2
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_map() expects parameter 1 to be a valid callback, function '%n' not found or invalid function name in /in/U5FfZ on line 2 Warning: array_map() expects parameter 1 to be a valid callback, function '' not found or invalid function name in /in/U5FfZ on line 2 Warning: array_map() expects parameter 1 to be a valid callback, function '' not found or invalid function name in /in/U5FfZ on line 2 Warning: implode(): Argument must be an array in /in/U5FfZ on line 2
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '(' in /in/U5FfZ on line 2
Process exited with code 255.

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