PHP code example of superruzafa / rules

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

superruzafa / rules example snippets

$ctx = new Context();
$ctx['name'] = 'Philip J.';
$ctx['surname'] = 'Fry';

// If the context's name is 'Philip J.' AND the context's surname is 'Fry'...
$condition = new AndOp(
    new EqualTo('{{ name }}', 'Philip J.'),
    new EqualTo('{{ surname }}', 'Fry')
);

// Then print the message
$action = new RunCallback(function (Context $c) {
    echo 'Hello, my name is ' . $c['name'] . $c['surname'];
});

$rule = new Rule();
$rule
    ->setCondition($condition)
    ->setAction($action)
    ->execute($ctx);
    
// Hello, my name is Philip J. Fry

$ctx = new Context();
$ctx['name'] = 'Philip J.';

$overrideCtx['surname'] = 'Fry';
$action = new OverrideContext($overrideCtx);
$action->perform($ctx);

var_dump($ctx);
// array(
//     'name' => 'Philip J.',
//     'surname' => 'Fry'
// );

$ctx = new Context();
$ctx['name'] = 'Philip J.';
$ctx['surname'] = 'Fry';
$ctx['fullname'] = '{{ name }} {{ surname }}';

$action = new InterpolateContext();
$action->perform($ctx);

var_dump($ctx);
// array(
//     'name' => 'Philip J.',
//     'surname' => 'Fry'
//     'fullname' => 'Philip J. Fry'
// );

$ctx = new Context();
$ctx['name'] = 'Philip J.';
$ctx['surname'] = 'Fry';
$ctx['fullname'] = 'Philip J. Fry';

$action = new FilterContext();
$action
    ->setKeys('fullname')
    ->setMode(FilterContext::ALLOW_KEYS)
    ->perform($ctx);

var_dump($ctx);
// array(
//     'fullname' => 'Philip J. Fry'
// );

$ctx = new Context();
$ctx['name'] = 'Philip J.';
$ctx['surname'] = 'Fry';

$callback = function(Context $ctx) {
    $ctx['fullname'] = $ctx['name'] . ' ' . $ctx['surname'];
    unset($ctx['surname'];
}

$action = new RunCallback($callback);
$action->perform($ctx);

var_dump($ctx);
// array(
//     'name' => 'Philip J.',
//     'fullname' => 'Philip J. Fry'
// );

$ctx = new Context();
$ctx['name'] = 'Philip J.';
$ctx['surname'] = 'Fry';

$action = new NoAction($callback);
$action->perform($ctx);

var_dump($ctx);
// array(
//     'name' => 'Philip J.',
//     'surname' => 'Fry'
// );

$ctx = new Context();
$ctx['fullname'] = '{{ name }} {{ surname }}';

$override = new OverrideContext(new Context(array('name' => 'Philip J.')));     // Adds name
$callback = new RunCallback(function (Context $c) { $c['surname'] = 'Fry'; } ); // Adds surname
$interpolate = new InterpolateContext();                                        // Interpolates fullname
$filter = new FilterContext(FilterContext::ALLOW_KEYS, 'fullname');             // Filters all except fullname

$sequence = new Sequence($override, $callback);
$sequence->appendAction($interpolate)->appendAction($filter);
$sequence->perform($ctx);

var_dump($ctx);
// array(
//     'fullname' => 'Philip J. Fry'
// );

 php
$and = new AndOp(true, false, false, true);
echo $and->evaluate(); // <-- false

 php
$or = new OrOp(true, false, false, true);
echo $or->evaluate(); // <-- true

 php
$not = new Not(true, false, false, true);
echo $not->evaluate(); // <-- false

 php
$equalTo = new EqualTo("foo", "bar", "baz");
echo $equalTo->evaluate(); // <-- false

 php
$notEqualTo = new EqualTo("foo", "bar", "baz");
echo $notEqualTo->evaluate(); // <-- true