Casting values

JsonMapper out of the box will come with a ScalarCaster configured to cast values to the following types: boolean, integer, string, float and mixed. These casts are applied in order to match the properties of the class you're trying to map to.

Alternatively you can configure your mapper with the StrictScalarCaster. This caster will throw an exception when the type of the JSON value doesn't match the type of the property you're trying to map to.

The StrictScalarCaster and the PropertyMapperBuilder used below are available since JsonMapper 2.10.0

<?php
 
$propertyMapper = \JsonMapper\Builders\PropertyMapperBuilder::new()
    ->withScalarCaster(new \JsonMapper\Helpers\StrictScalarCaster())
    ->build();
 
$mapper = \JsonMapper\JsonMapperBuilder::new()
    ->withPropertyMapper($propertyMapper)
    ->withDocBlockAnnotationsMiddleware()
    ->withTypedPropertiesMiddleware()
    ->build();