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RegEx
Less than 1 minute
Assert if the left value matches the regular expression. It is crucial to provide a valid regular expression. For more information about PHP RegEx, refer to the official PHP documentation. Otherwise, an unexpected result may be returned.
{
  "Condition": {
    "RegEx": {
      "${HTTP_GET.page}": "/^[a-z]+$/i"
    }
  }
}