README.md

Array Expression Language

This package extends the ExpressionLanguage Symfony component to compile and evaluate arrays and iterables with custom functions.

Documentation

See full Documentation

Installation

composer require php-etl/array-expression-language

Usage

You can use these expressions in your configuration files as in the following example :

foo: '@=count(input["myArray"])'

List of available functions

Generic functions

• firstKey(array $array) : int|string|null
• lastKey(array $array) : int|string|null
• keyExists(string|int $key, array $array) : bool
• merge(array ...$arrays) : array
• count(Countable|array $value) : int
• combine(array $keys, array $values) : array
• iterableToArray(Traversable $iterator, bool $use_keys = true) : array
• map(callable $callback, iterable $source) : iterable
• reduce(callable $callback, iterable $source) : string
• list(int $length, mixed $value) : iterable
• arrayFilter(array $array, ?callable $callback = null) : array
• mapValues(array $input, iterable $values) : array

Functions that can be used with reduce

• join(string $separator) : callable

Functions that can be used with map

• extraxctData(string $path) : callable

Functions that can be used with arrayFilter

Any function can be used with this method as long as it returns true or false.