<form method="POST">
    <h3>Editing: Specificity.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\CssSelector\Node;

/**
 * Represents a node specificity.
 *
 * This component is a port of the Python cssselect library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @see http://www.w3.org/TR/selectors/#specificity
 *
 * @author Jean-François Simon &lt;jeanfrancois.simon@sensiolabs.com&gt;
 *
 * @internal
 */
class Specificity
{
    public const A_FACTOR = 100;
    public const B_FACTOR = 10;
    public const C_FACTOR = 1;

    private $a;
    private $b;
    private $c;

    public function __construct(int $a, int $b, int $c)
    {
        $this-&gt;a = $a;
        $this-&gt;b = $b;
        $this-&gt;c = $c;
    }

    public function plus(self $specificity): self
    {
        return new self($this-&gt;a + $specificity-&gt;a, $this-&gt;b + $specificity-&gt;b, $this-&gt;c + $specificity-&gt;c);
    }

    public function getValue(): int
    {
        return $this-&gt;a * self::A_FACTOR + $this-&gt;b * self::B_FACTOR + $this-&gt;c * self::C_FACTOR;
    }

    /**
     * Returns -1 if the object specificity is lower than the argument,
     * 0 if they are equal, and 1 if the argument is lower.
     */
    public function compareTo(self $specificity): int
    {
        if ($this-&gt;a !== $specificity-&gt;a) {
            return $this-&gt;a &gt; $specificity-&gt;a ? 1 : -1;
        }

        if ($this-&gt;b !== $specificity-&gt;b) {
            return $this-&gt;b &gt; $specificity-&gt;b ? 1 : -1;
        }

        if ($this-&gt;c !== $specificity-&gt;c) {
            return $this-&gt;c &gt; $specificity-&gt;c ? 1 : -1;
        }

        return 0;
    }
}
</textarea><br>
    <input type="submit" value="Save">
</form>