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@ 2014-10-18T20:54:45Z

<?php
$a = 1110;
$b = 370;
$c = 6171.6;

$h = 71.1;

$i = -50; // undef
$k = 0;     // undef
$l = 0;     // undef

$step = 0.001;    // Auflösung für $i
$i_max = 100;     // um keine Endlosschleife zu produzieren
$epsilon = 0.001; // Fehlertoleranz
$found = false;

do {
    $k = 0.9942;
    $l = 0.998670248976177;
    $tmp = (556 / ($h / (545.223880597015 / 1000 * $k * $l)));

    $found = (abs($i - $tmp) <= $epsilon);

    if (!$found) {
        $i += $step;
    }

    if ($i > $i_max) {
        throw new Exception('Unable to calculate $i');
    }
} while (!$found);



$g = ceil($h / (545.223880597015 / 1000 * $l * $k));

//$i = 556 / $g; // ??? $i haben wir schon

$j = $g * $b / 1000 * $a / 100 * 1;

$e = ($i - $b / 1000) * $a / 100;
$f = $i * $a / 100;

$d = $c - $j;

foreach (range('a', 'l') as $var) {
    echo $var . ' = ';
    var_dump($$var);
    echo '<br />';
} 
?>

Output for git.master, git.master_jit, rfc.property-hooks: a = int(1110) <br />b = int(370) <br />c = float(6171.6) <br />d = float(5629.476000000001) <br />e = float(42.87929999971057) <br />f = float(46.98629999971056) <br />g = float(132) <br />h = float(71.1) <br />i = float(4.2329999999739245) <br />j = float(542.124) <br />k = float(0.9942) <br />l = float(0.998670248976177) <br />

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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