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<?php class G { private $s; function ​() { if (!$this->s) { $this->s = 'g'; } if ($a = @func_get_arg(0)) { return$this->s .= $a; } $this->s .= 'o'; return $this; } } function g() { return new G(); } // This is the best that you can do in PHP // because of this: https://wiki.php.net/rfc/uniform_variable_syntax // // PHP supports unicode, unicode supports zero-width spaces echo g()->​()->​()->​()->​('al') . PHP_EOL; echo g()->​()->​('al') . PHP_EOL; echo g​('al') . PHP_EOL;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ValueError: func_get_arg(): Argument #1 ($position) must be less than the number of the arguments passed to the currently executed function in /in/Ilclb:12 Stack trace: #0 /in/Ilclb(12): func_get_arg(0) #1 /in/Ilclb(31): G->​() #2 {main} thrown in /in/Ilclb on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
goooal goal Fatal error: Uncaught Error: Call to undefined function g​() in /in/Ilclb:33 Stack trace: #0 {main} thrown in /in/Ilclb on line 33
Process exited with code 255.
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
goooal goal Fatal error: Call to undefined function g​() in /in/Ilclb on line 33
Process exited with code 255.
Output for 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/Ilclb on line 31 goooalPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/Ilclb on line 32 goalPHP_EOL Fatal error: Call to undefined function g​() in /in/Ilclb on line 33
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ilclb on line 4
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ilclb on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/Ilclb on line 4
Process exited with code 255.
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