containsMultibyte(string $str)
なし
// Determine whether or not a string contains multibyte characters // // The result will be 0 if the string contains no multibyte characters int numFound = containsMultibyte("Test String"); // Result: 0 // The result will be non-zero if the string contains // multibyte characters // int numFound = containsMultibyte($localizedString); // Result: 1