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typo3/sysext/install/Classes/ViewHelpers/PhpInfoViewHelper.php

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+<?php
+namespace TYPO3\CMS\Install\ViewHelpers;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
+
+/**
+ * Utility class for phpinfo()
+ * @internal
+ */
+class PhpInfoViewHelper extends AbstractViewHelper
+{
+    use CompileWithRenderStatic;
+
+    /**
+     * @var bool
+     */
+    protected $escapeOutput = false;
+
+    /**
+     * @var bool
+     */
+    protected $escapeChildren = false;
+
+    /**
+     * @param array $arguments
+     * @param \Closure $renderChildrenClosure
+     * @param RenderingContextInterface $renderingContext
+     *
+     * @return string
+     */
+    public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
+    {
+        return self::removeAllHtmlOutsideBody(
+            self::changeHtmlToHtml5(
+                self::getPhpInfo()
+            )
+        );
+    }
+
+    /**
+     * Get information about PHP's configuration
+     *
+     * @return string HTML page with the configuration options
+     */
+    protected static function getPhpInfo()
+    {
+        ob_start();
+        phpinfo();
+
+        return ob_get_clean();
+    }
+
+    /**
+     * Remove all HTML outside the body tag from HTML string
+     *
+     * @param string $html Complete HTML markup for page
+     * @return string Content of the body tag
+     */
+    protected static function removeAllHtmlOutsideBody($html)
+    {
+        // Delete anything outside of the body tag and the body tag itself
+        $html = preg_replace('/^.*?<body.*?>/is', '', $html);
+        $html = preg_replace('/<\/body>.*?$/is', '', $html);
+
+        return $html;
+    }
+
+    /**
+     * Change HTML markup to HTML5
+     *
+     * @param string $html HTML markup to be cleaned
+     * @return string
+     */
+    protected static function changeHtmlToHtml5($html)
+    {
+        // Delete obsolete attributes
+        $html = preg_replace('#\s(cellpadding|border|width)="[^"]+"#', '', $html);
+
+        // Replace font tag with span
+        return str_replace(['<font', '</font>'], ['<span', '</span>'], $html);
+    }
+}