Set max and min stringLength for Zend ValidatorRules

Why did you post your full telphone stuff? Your question is just how do you enable autoload of custom files in Zend? Right?

In Zend 1.10.7 you can add the following to public/index.php ABOVE your bootstrap->run command

require_once "Zend/Loader/Autoloader.php";
$autoloader = Zend_Loader_Autoloader::getInstance();
$autoloader->registerNamespace('Custom');

You can register as many custom namespaces as you like. In this case Custom is a new namespace thus your classes should be named as follows.

class Custom_Validator_Telephone extends Zend_Validate_Abstract

Now about your directory structure, first question your MajorClasses folder is inside application/??? if so ok, in the same file, as above, there should be a set_include_path() function being run. Within it your setting your library path, now we can add the path to your new directory.

// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
    realpath(APPLICATION_PATH . '/../library'),
    get_include_path(),
    APPLICATION_PATH.'/MajorClasses'.PATH_SEPARATOR,
)));

WITHIN MajorClasses folder you will NOW have to create a directory FOR EACH namespace. So if you have the namespace Custom, you create the directory, also you have to create the Validator directory since you're naming it like that, so your path would be.

application/MajorClasses/Custom/Validator/Telephone.php

Telephone.php should be the name of your class file, the class filename is always the last namespace in the classname.

Did I miss anything?

You can specify the StringLength attribute as follows on numerous properties

[StringLength(20, ErrorMessageResourceName = "StringLengthMessage", ErrorMessageResourceType = typeof(Resource))]
public string OfficePhone { get; set; }
[StringLength(20, ErrorMessageResourceName = "StringLengthMessage", ErrorMessageResourceType = typeof(Resource))]
public string CellPhone { get; set; }

and add the string resource (named StringLengthMessage) in your resource file

"Maximum length is {1}"

Message is defined once and has a variable place holder should you change your mind regarding the length to test against.

You can specify the following:

1. {0} - Name
2. {1} - Maximum Length
3. {2} - Minimum Length

Update

To minimize duplication even further you can subclass StringLengthAttribute:

public class MyStringLengthAttribute : StringLengthAttribute
{
    public MyStringLengthAttribute() : this(20)
    {
    }

    public MyStringLengthAttribute(int maximumLength) : base(maximumLength)
    {
        base.ErrorMessageResourceName = "StringLengthMessage";
        base.ErrorMessageResourceType = typeof (Resource);
    }
}

Or you can override FormatErrorMessage if you want to add additional parameters. Now the properties look as follows:

[MyStringLength]
public string OfficePhone { get; set; }
[MyStringLength]
public string CellPhone { get; set; }