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<?php function g($x=0){ return $x?:function($y)use($x){return $x.g($y);}; } echo g('al') , PHP_EOL; echo g()('al') , PHP_EOL; echo g()()('al') , PHP_EOL; echo g()()()('al') , PHP_EOL;
Output for 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
al 0al Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 0 passed in /in/nomWD on line 8 and exactly 1 expected in /in/nomWD:3 Stack trace: #0 /in/nomWD(8): {closure}() #1 {main} thrown in /in/nomWD on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.33
al 0al Warning: Missing argument 1 for {closure}(), called in /in/nomWD on line 8 and defined in /in/nomWD on line 3 Notice: Undefined variable: y in /in/nomWD on line 3 Catchable fatal error: Object of class Closure could not be converted to string in /in/nomWD on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '(', expecting ',' or ';' in /in/nomWD on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected ':' in /in/nomWD on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':' in /in/nomWD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/nomWD on line 3
Process exited with code 255.
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