3v4l.org

run code in 300+ PHP versions simultaneously

@ 2017-04-06T16:42:45Z

<?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 * $number;
        }else if ($op == '='){
            echo $result;
        }
        $op = $char;
        $number = 0;
    } elseif (is_numeric($char)){
        $number = $number * 10 + $char;
    } else {
        echo "Неверный символ: {$char}\n";
    }
}

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

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.5 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: op = [], result = [0], number = [243], char = [+] op = [+], result = [243], number = [6743], char = [-] op = [-], result = [6986], number = [78], char = [*] op = [*], result = [6908], number = [2], char = [=]
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 op = [], result = [0], number = [243], char = [+] op = [+], result = [243], number = [6743], char = [-] op = [-], result = [6986], number = [78], char = [*] op = [*], result = [6908], number = [2], char = [=]

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