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arrays.rst
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Serializing arrays and hashes ============================= Introduction ------------ Serializing arrays and hashes (a concept that in PHP has not explicit boundaries) can be challenging. The serializer offers via ``@Type`` annotation different options to configure its behavior, but if we try to serialize directly an array (not as a property of an object), we need to use context information to determine the array "type" Examples -------- In case of a JSON serialization: .. code-block :: php <?php // default (let the PHP's json_encode function decide) $serializer->serialize([1, 2]); // [1, 2] $serializer->serialize(['a', 'b']); // ['a', 'b'] $serializer->serialize(['c' => 'd']); // {"c" => "d"} // same as default (let the PHP's json_encode function decide) $serializer->serialize([1, 2], SerializationContext::create()->setInitialType('array')); // [1, 2] $serializer->serialize([1 => 2], SerializationContext::create()->setInitialType('array')); // {"1": 2} $serializer->serialize(['a', 'b'], SerializationContext::create()->setInitialType('array')); // ['a', 'b'] $serializer->serialize(['c' => 'd'], SerializationContext::create()->setInitialType('array')); // {"c" => "d"} // typehint as strict array, keys will be always discarded $serializer->serialize([], SerializationContext::create()->setInitialType('array<integer>')); // [] $serializer->serialize([1, 2], SerializationContext::create()->setInitialType('array<integer>')); // [1, 2] $serializer->serialize(['a', 'b'], SerializationContext::create()->setInitialType('array<integer>')); // ['a', 'b'] $serializer->serialize(['c' => 'd'], SerializationContext::create()->setInitialType('array<string>')); // ["d"] // typehint as hash, keys will be always considered $serializer->serialize([], SerializationContext::create()->setInitialType('array<integer,integer>')); // {} $serializer->serialize([1, 2], SerializationContext::create()->setInitialType('array<integer,integer>')); // {"0" : 1, "1" : 2} $serializer->serialize(['a', 'b'], SerializationContext::create()->setInitialType('array<integer,integer>')); // {"0" : "a", "1" : "b"} $serializer->serialize(['c' => 'd'], SerializationContext::create()->setInitialType('array<string,string>')); // {"c" : "d"} .. note :: This applies only for the JSON serialization.