How do compare two values of a form in a validator?

froschdesign · September 13, 2022, 1:56pm

laminas-inputfilter is used within a form and this component sets a second parameter for the isValid method of a validator / validator chain:

github.com

laminas/laminas-inputfilter/blob/3b0f1185fff82547a2eec41dab9eaf7306307144/src/Input.php#L416


      
          
          
    // At this point, we need to run validators.
              // If we do not allow empty and the "continue if empty" flag are
              // BOTH false, we inject the "not empty" validator into the chain,
              // which adds that logic into the validation routine.
              if (! $allowEmpty && ! $continueIfEmpty) {
                  $this->injectNotEmptyValidator();
              }
          
          
    $validator = $this->getValidatorChain();
              $result    = $validator->isValid($value, $context);
              if (! $result && $this->hasFallback()) {
                  $this->setValue($this->getFallbackValue());
                  $result = true;
              }
          
          
    return $result;
          }
          
          
/**
           * @return array<array-key, string>

The second parameter contains all the values set for the form / input filter.

Check the Identical validator as reference for the usage:

github.com

laminas/laminas-validator/blob/2.24.x/src/Identical.php

<?php

namespace Laminas\Validator;

use ArrayAccess;
use Laminas\Stdlib\ArrayUtils;
use Traversable;

use function array_key_exists;
use function get_class;
use function gettype;
use function is_array;
use function is_int;
use function is_object;
use function is_string;
use function key;
use function sprintf;
use function var_export;

class Identical extends AbstractValidator

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How do compare two values of a form in a validator?

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