interface/modules/zend_modules/library/Zend/Validator/Digits.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Validator;
  11
  12 use Zend\Filter\Digits as DigitsFilter;
  13
  14 class Digits extends AbstractValidator
  15 {
  16     const NOT_DIGITS   = 'notDigits';
  17     const STRING_EMPTY = 'digitsStringEmpty';
  18     const INVALID      = 'digitsInvalid';
  19
  20     /**
  21      * Digits filter used for validation
  22      *
  23      * @var \Zend\Filter\Digits
  24      */
  25     protected static $filter = null;
  26
  27     /**
  28      * Validation failure message template definitions
  29      *
  30      * @var array
  31      */
  32     protected $messageTemplates = array(
  33         self::NOT_DIGITS   => "The input must contain only digits",
  34         self::STRING_EMPTY => "The input is an empty string",
  35         self::INVALID      => "Invalid type given. String, integer or float expected",
  36     );
  37
  38     /**
  39      * Returns true if and only if $value only contains digit characters
  40      *
  41      * @param  string $value
  42      * @return bool
  43      */
  44     public function isValid($value)
  45     {
  46         if (!is_string($value) && !is_int($value) && !is_float($value)) {
  47             $this->error(self::INVALID);
  48             return false;
  49         }
  50
  51         $this->setValue((string) $value);
  52
  53         if ('' === $this->getValue()) {
  54             $this->error(self::STRING_EMPTY);
  55             return false;
  56         }
  57
  58         if (null === static::$filter) {
  59             static::$filter = new DigitsFilter();
  60         }
  61
  62         if ($this->getValue() !== static::$filter->filter($this->getValue())) {
  63             $this->error(self::NOT_DIGITS);
  64             return false;
  65         }
  66
  67         return true;
  68     }
  69 }