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<?php $a = 'foo'; $b = & $a; $c = 'moo'; function evilExtractor(array $data) { foreach ($data as $key => & $value) { if (is_string($value)) { $value .= ' - modified'; } } } evilExtractor(get_defined_vars()); var_dump($a, $b, $c);
Output for git.master, git.master_jit, rfc.property-hooks
string(25) "foo - modified - modified" string(25) "foo - modified - modified" string(3) "moo"

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