preg_match (): No ending delimiter '/' found

使用Request中的rules有问题，正确示例phone

public function rules()\
{\
  return [\
  'phone' => ['required', 'regex:/^((13[0-9])|(14[5,7])|(15[0-3,5-9])|(17[0,3,5-8])|(18[0-9])|166|198|199)\d{8}$/', 'unique:users,phone'],\
  'password' => 'required|string|min:6',\
 ];\}

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