<?php

use Zend\Validator\Explode;
use Zend\Validator\Between;
use Zend\Debug\Debug;

$validator = new Explode();
$validator->setValidator(new Between([
    'min' => 1,
    'max' => 99,
]));

// true
Debug::dump($validator->isValid('2,79,5'));
Debug::dump($validator->getMessages());

// last element is empty string
Debug::dump($validator->isValid('2,6,55,'));
Debug::dump($validator->getMessages());

// 0 is less than min value
Debug::dump($validator->isValid('2,0,7'));
Debug::dump($validator->getMessages());

bool(true)

array(0) {
}

bool(false)

array(1) {
  [0] => array(1) {
    ["valueNotNumeric"] => string(69) "The min ('1') and max ('99') values are numeric, but the input is not"
  }
}

bool(false)

array(1) {
  [0] => array(1) {
    ["notBetween"] => string(50) "The input is not between '1' and '99', inclusively"
  }
}

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PHP 7.4, Zend 3.0, Symfony 4.3, Laravel 5.8, PHPUnit 8.0, Doctrine 2.10