Type transformers, normalizers and resolvers.

Installation

Install with Composer;

composer require phrity/util-transformer

All transformers exposes canTransform() and transform() methods.

This allows us to transform data of a certain type to another type. A specific transformer may not be able to transform all types.

$transformer = new BasicTypeConverter();
if ($transformer->canTransform($subject)) {
    $transformed = transformer->transform($subject);
}

As option, a transformer can take a target type specifier as second argument.

$transformer = new BasicTypeConverter();
if ($transformer->canTransform($subject, Type::ARRAY)) {
    $transformed = transformer->transform($subject, Type::ARRAY);
}

Utility resolvers enable stacking multiple transformers and performing other tasks.

$transformer = new RecursionResolver(
    new FirstMatchResolver([
        new EnumConverter(),
        new ReadableConverter(),
        new ThrowableConverter(),
        new StringableConverter(),
        new BasicTypeConverter(),
    ])
);
if ($transformer->canTransform($subject, Type::STRING)) {
    $transformed = transformer->transform($subject, Type::STRING);
}

Encoders & Decoders

• Flatten Decoder - Expands array with flattened keys to nested array
• Json Decoder - Decodes JSON string

Type converters

• Basic Type - Support transforming all PHP types to all other types
• DateTime - Transform DateTime classes to string
• Enum - Transform Enums to string
• Json Serializable - Transform JSON serializable objects
• Readable - Transform booleans and null to readable strings
• Reversed Readable - Transform some strings to boolean and null
• Stringable - Transform stringable objects to string
• Throwable - Transform throwable to object, array or string

Utility resolvers

• Chained - Collection of transformers that will send output from one into next one
• First Match - Collection of transformers that will use first compatible transformer for transformation
• Recursion - Will apply transformer recursively
• String - Fold anything to a string

Wrappers

• Symfony Normalizer - Wrap class implementing Symfony NormalizerInterface

Version	PHP
1.3	^8.1	Transformer: DateTime, Resolver: Chained, String
1.2	^8.1	Additional transformers
1.1	^8.1	Additional transformers
1.0	^8.1	Initial version