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Viewing: Requirement.php

<?php

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

namespace Symfony\Requirements;

/**
 * Represents a single PHP requirement, e.g. an installed extension.
 * It can be a mandatory requirement or an optional recommendation.
 * There is a special subclass, named PhpConfigRequirement, to check a PHP
 * configuration option.
 *
 * @author Tobias Schultze <http://tobion.de>
 */
class Requirement
{
    private $fulfilled;
    private $testMessage;
    private $helpText;
    private $helpHtml;
    private $optional;

    /**
     * Constructor that initializes the requirement.
     *
     * @param bool        $fulfilled   Whether the requirement is fulfilled
     * @param string      $testMessage The message for testing the requirement
     * @param string      $helpHtml    The help text formatted in HTML for resolving the problem
     * @param string|null $helpText    The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
     * @param bool        $optional    Whether this is only an optional recommendation not a mandatory requirement
     */
    public function __construct($fulfilled, $testMessage, $helpHtml, $helpText = null, $optional = false)
    {
        $this->fulfilled = (bool) $fulfilled;
        $this->testMessage = (string) $testMessage;
        $this->helpHtml = (string) $helpHtml;
        $this->helpText = null === $helpText ? strip_tags($this->helpHtml) : (string) $helpText;
        $this->optional = (bool) $optional;
    }

    /**
     * Returns whether the requirement is fulfilled.
     *
     * @return bool true if fulfilled, otherwise false
     */
    public function isFulfilled()
    {
        return $this->fulfilled;
    }

    /**
     * Returns the message for testing the requirement.
     *
     * @return string The test message
     */
    public function getTestMessage()
    {
        return $this->testMessage;
    }

    /**
     * Returns the help text for resolving the problem.
     *
     * @return string The help text
     */
    public function getHelpText()
    {
        return $this->helpText;
    }

    /**
     * Returns the help text formatted in HTML.
     *
     * @return string The HTML help
     */
    public function getHelpHtml()
    {
        return $this->helpHtml;
    }

    /**
     * Returns whether this is only an optional recommendation and not a mandatory requirement.
     *
     * @return bool true if optional, false if mandatory
     */
    public function isOptional()
    {
        return $this->optional;
    }
}
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