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@ 2018-07-26T23:35:08Z

<?php

class Example {
    public function yearManufactured() {
        return true;
    }

    public function make() {
        return false;
    }

    public function model() {
        return true;
    }

    public function evaluateExpressionArray(array $expression) {
        $expr = '$result =';
        foreach ($expression as $part) {
            if ($part == '||' || $part == '&&') {
                $expr .= " $part ";
            } elseif (method_exists($this, $part)) {
                $expr .= $this->$part() ? 'true' : 'false';
            } else {
                return null;
            }
        }
        echo $expr;
        try {
            eval("$expr;");
        } catch (ParseError $e) {
            return null;
        }
        return $result;
    }
}

$ex = new Example();
$result = $ex->evaluateExpressionArray(array(
    'yearManufactured',
    '&&',
    'make',
    '||',
    '||',
    'model'
));
var_dump($result);

Output for git.master_jit, git.master, rfc.property-hooks: $result =true && false || || trueNULL

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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