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run code in 200+ php & hhvm versions
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<?php function f(&$obst) { $obst['birne'] = 'gelb'; return &$obst; } $obst['apfel'] = 'gruen'; $obst = f($obst); var_dump($obst);
Output for 5.3.0 - 5.4.5
Parse error: syntax error, unexpected '&' in /in/PSQAP on line 4
Process exited with code 255.