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<?php $matches = []; preg_match('/^(foo)(bar)(baz)?$/', 'foobar', list(&$foo, &$bar, &$baz) = $matches); print_r(get_defined_vars());
Output for 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
Array ( [_GET] => Array ( ) [_POST] => Array ( ) [_COOKIE] => Array ( ) [_FILES] => Array ( ) [argv] => Array ( [0] => /in/e0VeT ) [argc] => 1 [_SERVER] => Array ( [TERM] => xterm [PATH] => /usr/bin:/bin [LANG] => C [SHELL] => /bin/sh [MAIL] => /var/mail/nobody [LOGNAME] => nobody [USER] => nobody [HOME] => /tmp [PHP_SELF] => /in/e0VeT [SCRIPT_NAME] => /in/e0VeT [SCRIPT_FILENAME] => /in/e0VeT [PATH_TRANSLATED] => /in/e0VeT [DOCUMENT_ROOT] => [REQUEST_TIME_FLOAT] => 1392298402.0001 [REQUEST_TIME] => 1392298402 [argv] => Array ( [0] => /in/e0VeT ) [argc] => 1 ) [matches] => Array ( [0] => foobar [1] => foo [2] => bar ) [foo] => [bar] => [baz] => )
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Fatal error: [] and list() assignments cannot be by reference in /in/e0VeT on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Parse error: syntax error, unexpected '&', expecting ',' or ')' in /in/e0VeT on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/e0VeT on line 3
Process exited with code 255.

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