# Hex

`Zend_Validate_Hex` allows you to validate if a given value contains only hexadecimal characters. These are all characters from 0 to 9 and A to F case insensitive. There is no length limitation for the input you want to validate.

    $validator = new Zend_Validate_Hex();
    if ($validator->isValid('123ABC')) {
        // value contains only hex chars
    } else {
        // false
    }

## Invalid characters

All other characters will return false, including whitespace and decimal point. Also unicode zeros and numbers from other scripts than latin will not be treaten as valid.

## Supported options for Zend_Validate_Hex

There are no additional options for `Zend_Validate_Hex`: