antonio30111988/evaluator

Symfony Expression Language for Laravel

1.3.3 2019-10-02 12:59 UTC

Requires

• php: >=5.4
• markrogoyski/math-php: ^0.53.0
• symfony/expression-language: ~4.4

Requires (Dev)

• mockery/mockery: ~1.0
• satooshi/php-coveralls: ~2.1

MIT

• Antonio Lolić

• symfony
• laravel
• expression-language
• math-functions

README

Symfony Expression Language module for Laravel.

Forked from https://github.com/periloso/evaluator

Installation

Simply update the composer.json file and run composer install.

"require": {
	"antonio30111988/evaluator": "1.3.*"
}  

Quick Installation

composer require "antonio30111988/evaluator=1.3.*"

How To Use

Evaluating an expression

$test = [
    'foo' => 10,
    'bar' => 5
];

echo Evaluator::evaluate('foo > bar', $test); //this will return true

You can also save the expression rule.

$test = [
    'foo' => 10,
    'bar' => 5
];

Evaluator::expression()->add('test', 'foo > bar');

echo Evaluator::evaluateRule('test', $test); //this will return true

For supported expressions, visit the Symfony Expression Language Component.

Condition

Let say we want to implement 10% tax to our collection.

$item = [
    'price' => 100
];

$condition = [
    'target' => 'price',
    'action' => '10%',
    'rule' => 'price > 50'
];

Evaluator::expression()->add('tax', $condition);

$calculated = Evaluator::condition('tax', $item);

Item with multiplier.

$item = [
	'price' => 50,
	'quantity' => 2
];

$condition = [
    'target' => 'price',
    'action' => '10%',
    'rule' => 'price > 50',
    'multiplier' => 'quantity'
];

Evaluator::expression()->add('tax', $condition);

$calculated = Evaluator::condition('tax', $item);