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<?php preg_match('/^[\w\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches); var_dump($matches); preg_match('/^[\w-\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches); var_dump($matches); preg_match('/^[\\w-\\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> string(39) "admin.general.canViewPrivateUserOptions" } Warning: preg_match(): Compilation failed: invalid range in character class at offset 4 in /in/66NDo on line 6 array(1) { [0]=> string(39) "admin.general.canViewPrivateUserOptions" } Warning: preg_match(): Compilation failed: invalid range in character class at offset 4 in /in/66NDo on line 9 array(1) { [0]=> string(39) "admin.general.canViewPrivateUserOptions" }

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