Online PHP editor | rfc for 1ensi

@ 2017-04-06T16:44:59Z

<?php
error_reporting(-1);

$input = '243+6743-78*2=';
$inputLenght = mb_strlen($input);

$number = 0;
$result = 0;
$op = '';

for ($i = 0; $i < $inputLenght; $i++){
    $char = mb_substr($input, $i, 1);
    if ($char == '+' || $char == '-' || $char == '*' || $char == '='){
        if ($op == ''){
            reporting($op, $result, $number, $char);
            $result = $number;
        }else if ($op == '+'){
            reporting($op, $result, $number, $char);
            $result = $result + $number;
        }else if ($op == '-'){
            reporting($op, $result, $number, $char);
            $result = $result - $number;
        }else if ($op == '*'){
            reporting($op, $result, $number, $char);
            $result = $result * $number;
        }
        $op = $char;
        $number = 0;
    } elseif (is_numeric($char)){
        $number = $number * 10 + $char;
    } else {
        echo "Неверный символ: {$char}\n";
    }
}

echo "Ответ: {$input}{$result}\n";

function reporting($op, $result, $number, $char){
    echo "op = [{$op}], result = [{$result}], number = [{$number}], char = [{$char}]\n";
}

Output for git.master, git.master_jit, rfc.property-hooks: op = [], result = [0], number = [243], char = [+] op = [+], result = [243], number = [6743], char = [-] op = [-], result = [6986], number = [78], char = [*] op = [*], result = [6908], number = [2], char = [=] Ответ: 243+6743-78*2=13816

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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