JMSSerializer PassThroughNamingStrategy

PassThroughNamingStrategy.php

<?php

use JMS\Serializer\Naming\PropertyNamingStrategyInterface;
use JMS\Serializer\Metadata\PropertyMetadata;

class PassThroughNamingStrategy implements PropertyNamingStrategyInterface
{
    /**
     * Translates the name of the property to the serialized version.
     *
     * @param PropertyMetadata $property
     *
     * @return string
     */
    public function translateName(PropertyMetadata $property)
    {
        return $property->name;
    }
}

setup.php

<?php
SerializerBuilder::create()
            // By default JMSSerializer converts camelCase to under_score for properties. This uses passthrough instead, leaving the properties as is.
            ->setPropertyNamingStrategy(new SerializedNameAnnotationStrategy(new PassThroughNamingStrategy()))
            ->build();