PHP get_performance_info函数代码示例

 /**
  * Outputs the page's footer
  * @return string HTML fragment
  */
 public function footer()
 {
     global $CFG, $DB, $USER;
     $output = $this->container_end_all(true);
     $footer = $this->opencontainers->pop('header/footer');
     if (debugging() and $DB and $DB->is_transaction_started()) {
         // TODO: MDL-20625 print warning - transaction will be rolled back
     }
     // Provide some performance info if required
     $performanceinfo = '';
     if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
         $perf = get_performance_info();
         if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
             error_log("PERF: " . $perf['txt']);
         }
         if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
             $performanceinfo = krystle_performance_output($perf);
         }
     }
     $perftoken = property_exists($this, "unique_performance_info_token") ? $this->unique_performance_info_token : self::PERFORMANCE_INFO_TOKEN;
     $endhtmltoken = property_exists($this, "unique_end_html_token") ? $this->unique_end_html_token : self::END_HTML_TOKEN;
     $footer = str_replace($perftoken, $performanceinfo, $footer);
     $footer = str_replace($endhtmltoken, $this->page->requires->get_end_code(), $footer);
     $this->page->set_state(moodle_page::STATE_DONE);
     if (!empty($this->page->theme->settings->persistentedit) && property_exists($USER, 'editing') && $USER->editing && !$this->really_editing) {
         $USER->editing = false;
     }
     return $output . $footer;
 }

    /**
     * Outputs the page's footer
     * @return string HTML fragment
     */
    public function footer() {
        global $CFG, $DB;

        $output = $this->container_end_all(true);

        $footer = $this->opencontainers->pop('header/footer');

        if (debugging() and $DB and $DB->is_transaction_started()) {
            // TODO: MDL-20625 print warning - transaction will be rolled back
        }

        // Provide some performance info if required
        $performanceinfo = '';
        if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
            $perf = get_performance_info();
            if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
                error_log("PERF: " . $perf['txt']);
            }
            if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
                $performanceinfo = krystle2_performance_output($perf);
            }
        }
        $footer = str_replace(self::PERFORMANCE_INFO_TOKEN, $performanceinfo, $footer);

        $footer = str_replace(self::END_HTML_TOKEN, $this->page->requires->get_end_code(), $footer);

        $this->page->set_state(moodle_page::STATE_DONE);

        return $output . $footer;
    }

/**
 * Dwoo {mahara_performance_info} function plugin
 *
 * Type:     function<br>
 * Name:     mahara_performance_info<br>
 * Date:     June 22, 2006<br>
 * Purpose:  Fetch internationalized strings
 * @author   Catalyst IT Ltd
 * @version  1.0
 * @return html to display in the footer.
 */
function Dwoo_Plugin_mahara_performance_info(Dwoo $dwoo)
{
    if (!get_config('perftofoot') && !get_config('perftolog')) {
        return;
    }
    $info = get_performance_info();
    $dwoo = smarty_core();
    foreach ($info as $key => $value) {
        if ($key == 'realtime') {
            $value = round($value, 3);
        }
        $dwoo->assign('perf_' . $key, $value);
    }
    // extras
    $dwoo->assign('perf_memory_total_display', display_size($info['memory_total']));
    $dwoo->assign('perf_memory_growth_display', display_size($info['memory_growth']));
    if (get_config('perftolog')) {
        perf_to_log($info);
    }
    if (get_config('perftofoot')) {
        return $dwoo->fetch('performancefooter.tpl');
    }
}

 /**
  * Outputs the page's footer
  * @return string HTML fragment
  */
 public function footer()
 {
     global $CFG, $USER;
     $output = $this->container_end_all(true);
     $footer = $this->opencontainers->pop('header/footer');
     // Provide some performance info if required
     $performanceinfo = '';
     if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
         $perf = get_performance_info();
         if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
             error_log("PERF: " . $perf['txt']);
         }
         if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
             $performanceinfo = essential_performance_output($perf);
         }
     }
     $footer = str_replace($this->unique_performance_info_token, $performanceinfo, $footer);
     $footer = str_replace($this->unique_end_html_token, $this->page->requires->get_end_code(), $footer);
     $this->page->set_state(moodle_page::STATE_DONE);
     if (!empty($this->page->theme->settings->persistentedit) && property_exists($USER, 'editing') && $USER->editing && !$this->really_editing) {
         $USER->editing = false;
     }
     return $output . $footer;
 }

    /**
     * Outputs the page's footer
     *
     * @return string HTML fragment
     */
    public function footer() {
        global $CFG, $DB;

        $output = $this->container_end_all(true);

        $footer = $this->opencontainers->pop('header/footer');

        if (debugging() and $DB and $DB->is_transaction_started()) {
            // TODO: MDL-20625 print warning - transaction will be rolled back
        }

        // Provide some performance info if required
        $performanceinfo = '';
        if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
            $perf = get_performance_info();
            if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
                $performanceinfo = $perf['html'];
            }
        }

        // We always want performance data when running a performance test, even if the user is redirected to another page.
        if (MDL_PERF_TEST && strpos($footer, $this->unique_performance_info_token) === false) {
            $footer = $this->unique_performance_info_token . $footer;
        }
        $footer = str_replace($this->unique_performance_info_token, $performanceinfo, $footer);

        $footer = str_replace($this->unique_end_html_token, $this->page->requires->get_end_code(), $footer);

        $this->page->set_state(moodle_page::STATE_DONE);

        return $output . $footer;
    }

 /**
  * Outputs the page's footer
  * @return string HTML fragment
  */
 public function footer()
 {
     global $CFG;
     $output = $this->container_end_all(true);
     $footer = $this->opencontainers->pop('header/footer');
     // Provide some performance info if required.
     $performanceinfo = '';
     if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
         $perf = get_performance_info();
         if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
             // @codingStandardsIgnoreStart
             error_log("PERF: " . $perf['txt']);
             // @codingStandardsIgnoreEnd
         }
         if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
             $performanceinfo = $this->performance_output($perf, \theme_essential\toolbox::get_setting('perfinfo'));
         }
     }
     $footer = str_replace($this->unique_performance_info_token, $performanceinfo, $footer);
     $footer = str_replace($this->unique_end_html_token, $this->page->requires->get_end_code(), $footer);
     $this->page->set_state(moodle_page::STATE_DONE);
     $info = '<!-- Essential theme version: ' . $this->page->theme->settings->version . ', developed, enhanced and maintained by Gareth J Barnard: about.me/gjbarnard -->';
     return $output . $footer . $info;
 }

/**
 * Redirects the user to another page, after printing a notice
 *
 * @param string $url The url to take the user to
 * @param string $message The text message to display to the user about the redirect, if any
 * @param string $delay How long before refreshing to the new page at $url?
 * @todo '&' needs to be encoded into '&' for XHTML compliance,
 *      however, this is not true for javascript. Therefore we
 *      first decode all entities in $url (since we cannot rely on)
 *      the correct input) and then encode for where it's needed
 *      echo "<script type='text/javascript'>alert('Redirect $url');</script>";
 */
function redirect($url, $message = '', $delay = -1)
{
    global $CFG, $THEME, $SESSION, $PAGE;
    if (!empty($CFG->usesid) && !isset($_COOKIE[session_name()])) {
        $url = $SESSION->sid_process_url($url);
    }
    $message = clean_text($message);
    $encodedurl = preg_replace("/\\&(?![a-zA-Z0-9#]{1,8};)/", "&amp;", $url);
    $encodedurl = preg_replace('/^.*href="([^"]*)".*$/', "\\1", clean_text('<a href="' . $encodedurl . '" />'));
    $url = str_replace('&amp;', '&', $encodedurl);
    /// At developer debug level. Don't redirect if errors have been printed on screen.
    /// Currenly only works in PHP 5.2+; we do not want strict PHP5 errors
    $lasterror = error_get_last();
    $error = defined('DEBUGGING_PRINTED') or !empty($lasterror) && $lasterror['type'] & DEBUG_DEVELOPER;
    $errorprinted = debugging('', DEBUG_ALL) && $CFG->debugdisplay && $error;
    if ($errorprinted) {
        $message = "<strong>Error output, so disabling automatic redirect.</strong></p><p>" . $message;
    }
    $performanceinfo = '';
    if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
        if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
            $perf = get_performance_info();
            error_log("PERF: " . $perf['txt']);
        }
    }
    /// when no message and header printed yet, try to redirect
    if (empty($message) and !$PAGE->headerprinted) {
        // Technically, HTTP/1.1 requires Location: header to contain
        // the absolute path. (In practice browsers accept relative
        // paths - but still, might as well do it properly.)
        // This code turns relative into absolute.
        if (!preg_match('|^[a-z]+:|', $url)) {
            // Get host name http://www.wherever.com
            $hostpart = preg_replace('|^(.*?[^:/])/.*$|', '$1', $CFG->wwwroot);
            if (preg_match('|^/|', $url)) {
                // URLs beginning with / are relative to web server root so we just add them in
                $url = $hostpart . $url;
            } else {
                // URLs not beginning with / are relative to path of current script, so add that on.
                $url = $hostpart . preg_replace('|\\?.*$|', '', me()) . '/../' . $url;
            }
            // Replace all ..s
            while (true) {
                $newurl = preg_replace('|/(?!\\.\\.)[^/]*/\\.\\./|', '/', $url);
                if ($newurl == $url) {
                    break;
                }
                $url = $newurl;
            }
        }
        $delay = 0;
        //try header redirection first
        @header($_SERVER['SERVER_PROTOCOL'] . ' 303 See Other');
        //302 might not work for POST requests, 303 is ignored by obsolete clients
        @header('Location: ' . $url);
        //another way for older browsers and already sent headers (eg trailing whitespace in config.php)
        echo '<meta http-equiv="refresh" content="' . $delay . '; url=' . $encodedurl . '" />';
        print_js_call('document.location.replace', array($url));
        die;
    }
    if ($delay == -1) {
        $delay = 3;
        // if no delay specified wait 3 seconds
    }
    if (!$PAGE->headerprinted) {
        // this type of redirect might not be working in some browsers - such as lynx :-(
        print_header('', '', '', '', $errorprinted ? '' : '<meta http-equiv="refresh" content="' . $delay . '; url=' . $encodedurl . '" />');
        $delay += 3;
        // double redirect prevention, it was sometimes breaking upgrades before 1.7
    } else {
        print_container_end_all(false, $THEME->open_header_containers);
    }
    echo '<div id="redirect">';
    echo '<div id="message">' . $message . '</div>';
    echo '<div id="continue">( <a href="' . $encodedurl . '">' . get_string('continue') . '</a> )</div>';
    echo '</div>';
    if (!$errorprinted) {
        print_delayed_js_call($delay, 'document.location.replace', array($url));
    }
    $CFG->docroot = false;
    // to prevent the link to moodle docs from being displayed on redirect page.
    print_footer('none');
    die;
}

function moodle_request_shutdown()
{
    global $CFG;
    // initially, we are only ever called under apache
    // but check just in case
    if (function_exists('apache_child_terminate') && function_exists('memory_get_usage') && ini_get_bool('child_terminate')) {
        if (empty($CFG->apachemaxmem)) {
            $CFG->apachemaxmem = 25000000;
            // default 25MiB
        }
        if (memory_get_usage() > (int) $CFG->apachemaxmem) {
            trigger_error('Mem usage over $CFG->apachemaxmem: marking child for reaping.');
            @apache_child_terminate();
        }
    }
    if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
        if (defined('MDL_PERFTOLOG')) {
            $perf = get_performance_info();
            error_log("PERF: " . $perf['txt']);
        }
        if (defined('MDL_PERFINC')) {
            $inc = get_included_files();
            $ts = 0;
            foreach ($inc as $f) {
                if (preg_match(':^/:', $f)) {
                    $fs = filesize($f);
                    $ts += $fs;
                    $hfs = display_size($fs);
                    error_log(substr($f, strlen($CFG->dirroot)) . " size: {$fs} ({$hfs})", NULL, NULL, 0);
                } else {
                    error_log($f, NULL, NULL, 0);
                }
            }
            if ($ts > 0) {
                $hts = display_size($ts);
                error_log("Total size of files included: {$ts} ({$hts})");
            }
        }
    }
}

/**
 * This function expects to called during shutdown
 * should be set via register_shutdown_function()
 * in lib/setup.php .
 *
 * @return void
 */
function moodle_request_shutdown()
{
    global $CFG;
    // help apache server if possible
    $apachereleasemem = false;
    if (function_exists('apache_child_terminate') && function_exists('memory_get_usage') && ini_get_bool('child_terminate')) {
        $limit = empty($CFG->apachemaxmem) ? 64 * 1024 * 1024 : $CFG->apachemaxmem;
        //64MB default
        if (memory_get_usage() > get_real_size($limit)) {
            $apachereleasemem = $limit;
            @apache_child_terminate();
        }
    }
    // deal with perf logging
    if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
        if ($apachereleasemem) {
            error_log('Mem usage over ' . $apachereleasemem . ': marking Apache child for reaping.');
        }
        if (defined('MDL_PERFTOLOG')) {
            $perf = get_performance_info();
            error_log("PERF: " . $perf['txt']);
        }
        if (defined('MDL_PERFINC')) {
            $inc = get_included_files();
            $ts = 0;
            foreach ($inc as $f) {
                if (preg_match(':^/:', $f)) {
                    $fs = filesize($f);
                    $ts += $fs;
                    $hfs = display_size($fs);
                    error_log(substr($f, strlen($CFG->dirroot)) . " size: {$fs} ({$hfs})", NULL, NULL, 0);
                } else {
                    error_log($f, NULL, NULL, 0);
                }
            }
            if ($ts > 0) {
                $hts = display_size($ts);
                error_log("Total size of files included: {$ts} ({$hts})");
            }
        }
    }
}

/**
 * Redirects the user to another page, after printing a notice
 *
 * @param string $url The url to take the user to
 * @param string $message The text message to display to the user about the redirect, if any
 * @param string $delay How long before refreshing to the new page at $url?
 * @todo '&' needs to be encoded into '&' for XHTML compliance,
 *      however, this is not true for javascript. Therefore we
 *      first decode all entities in $url (since we cannot rely on)
 *      the correct input) and then encode for where it's needed
 *      echo "<script type='text/javascript'>alert('Redirect $url');</script>";
 */
function redirect($url, $message = '', $delay = -1, $adminroot = '')
{
    global $CFG;
    if (!empty($CFG->usesid) && !isset($_COOKIE[session_name()])) {
        $url = sid_process_url($url);
    }
    $message = clean_text($message);
    $url = html_entity_decode($url);
    $url = str_replace(array("\n", "\r"), '', $url);
    // some more cleaning
    $encodedurl = htmlentities($url);
    $tmpstr = clean_text('<a href="' . $encodedurl . '" />');
    //clean encoded URL
    $encodedurl = substr($tmpstr, 9, strlen($tmpstr) - 13);
    $url = html_entity_decode($encodedurl);
    $surl = addslashes($url);
    $performanceinfo = '';
    if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
        if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
            $perf = get_performance_info();
            error_log("PERF: " . $perf['txt']);
        }
    }
    /// when no message and header printed yet, try to redirect
    if (empty($message) and !defined('HEADER_PRINTED')) {
        // Technically, HTTP/1.1 requires Location: header to contain
        // the absolute path. (In practice browsers accept relative
        // paths - but still, might as well do it properly.)
        // This code turns relative into absolute.
        if (!preg_match('|^[a-z]+:|', $url)) {
            // Get host name http://www.wherever.com
            $hostpart = preg_replace('|^(.*?[^:/])/.*$|', '$1', $CFG->wwwroot);
            if (preg_match('|^/|', $url)) {
                // URLs beginning with / are relative to web server root so we just add them in
                $url = $hostpart . $url;
            } else {
                // URLs not beginning with / are relative to path of current script, so add that on.
                $url = $hostpart . preg_replace('|\\?.*$|', '', me()) . '/../' . $url;
            }
            // Replace all ..s
            while (true) {
                $newurl = preg_replace('|/(?!\\.\\.)[^/]*/\\.\\./|', '/', $url);
                if ($newurl == $url) {
                    break;
                }
                $url = $newurl;
            }
        }
        $delay = 0;
        //try header redirection first
        @header($_SERVER['SERVER_PROTOCOL'] . ' 303 See Other');
        //302 might not work for POST requests, 303 is ignored by obsolete clients
        @header('Location: ' . $url);
        //another way for older browsers and already sent headers (eg trailing whitespace in config.php)
        echo '<meta http-equiv="refresh" content="' . $delay . '; url=' . $encodedurl . '" />';
        echo '<script type="text/javascript">' . "\n" . '//<![CDATA[' . "\n" . "location.replace('{$surl}');" . "\n" . '//]]>' . "\n" . '</script>';
        // To cope with Mozilla bug
        die;
    }
    if ($delay == -1) {
        $delay = 3;
        // if no delay specified wait 3 seconds
    }
    if (!defined('HEADER_PRINTED')) {
        // this type of redirect might not be working in some browsers - such as lynx :-(
        print_header('', '', '', '', '<meta http-equiv="refresh" content="' . $delay . '; url=' . $encodedurl . '" />');
        $delay += 3;
        // double redirect prevention, it was sometimes breaking upgrades before 1.7
    }
    echo '<div style="text-align:center">';
    echo '<div>' . $message . '</div>';
    echo '<div>( <a href="' . $encodedurl . '">' . get_string('continue') . '</a> )</div>';
    echo '</div>';
    // it might be better not to set timeout the same for both types of redirect, so that we can be sure which one wins
    ?>
<script type="text/javascript">
//<![CDATA[

  function redirect() {
      document.location.replace('<?php 
    echo $surl;
    ?>
');
  }
  setTimeout("redirect()", <?php 
    echo $delay * 1000;
    ?>
);
//.........这里部分代码省略.........

function perf_to_log($info = null)
{
    if (!get_config('perftolog')) {
        return true;
    }
    if (empty($info)) {
        $info = get_performance_info();
    }
    $logstring = 'PERF: ' . strip_querystring(get_script_path()) . ': ';
    $logstring .= ' memory_total: ' . $info['memory_total'] . 'B (' . display_size($info['memory_total']) . ') memory_growth: ' . $info['memory_growth'] . 'B (' . display_size($info['memory_growth']) . ')';
    $logstring .= ' time: ' . $info['realtime'] . 's';
    $logstring .= ' includecount: ' . $info['includecount'];
    $logstring .= ' dbqueries: ' . $info['dbreads'] . ' reads, ' . $info['dbwrites'] . ' writes, ' . $info['dbcached'] . ' cached';
    $logstring .= ' ticks: ' . $info['ticks'] . ' user: ' . $info['utime'] . ' sys: ' . $info['stime'] . ' cuser: ' . $info['cutime'] . ' csys: ' . $info['cstime'];
    $logstring .= ' serverload: ' . $info['serverload'];
    log_debug($logstring);
}

function templates_variables_substitute($param)
{
    global $CFG;
    $variables = $param[0];
    $template_variable = $param[1];
    $run_result = '';
    // Substitute variables in templates:
    // where {{variablename}} is found in the template, this function is passed
    // "variablename" and returns the proper variable
    global $menubar;
    global $submenubar;
    global $metatags;
    global $PAGE;
    global $template_id;
    //error_log("tvs " . print_r($template_variable,1));
    if (isset($variables[$template_variable])) {
        return $variables[$template_variable];
    } else {
        switch ($template_variable) {
            case "username":
                if (logged_on) {
                    return $_SESSION['username'];
                } else {
                    return gettext("Guest");
                }
                break;
            case "userfullname":
                if (logged_on) {
                    return htmlspecialchars($_SESSION['name'], ENT_COMPAT, 'utf-8');
                } else {
                    return gettext("Guest") . " [<a href=\"" . url . "login/index.php\">" . gettext("Log in") . "</a>]";
                }
                break;
                //         case "userfullname":
                //             global $page_owner;
                //             if (!isset($page_owner) || $page_owner == -1) {
                //                 return "";
                //             } else {
                //                 return run("users:id_to_name", $page_owner);
                //             }
                //             break;
            //         case "userfullname":
            //             global $page_owner;
            //             if (!isset($page_owner) || $page_owner == -1) {
            //                 return "";
            //             } else {
            //                 return run("users:id_to_name", $page_owner);
            //             }
            //             break;
            case "menu":
                if (logged_on) {
                    return templates_draw(array('menuitems' => menu_join('', $PAGE->menu), 'context' => 'menu'));
                }
                break;
            case "submenu":
                return templates_draw(array('submenuitems' => menu_join('&nbsp;|&nbsp;', $PAGE->menu_sub), 'context' => 'submenu'));
                break;
            case "topmenu":
                if (logged_on) {
                    return templates_draw(array('topmenuitems' => menu_join('', $PAGE->menu_top), 'context' => 'topmenu'));
                }
                break;
            case "url":
                return url;
                break;
            case "metatags":
                // $run_result = "<link href=\"/".$template_variable.".css\" rel=\"stylesheet\" type=\"text/css\" />";
                return "<style type=\"text/css\"><!--\n" . templates_draw(array('template' => $template_id, 'context' => 'css')) . "// -->\n</style>\n" . $metatags;
                break;
            case 'perf':
                $perf = get_performance_info();
                if (defined('ELGG_PERFTOLOG')) {
                    error_log("PERF: " . $perf['txt']);
                }
                if (defined('ELGG_PERFTOFOOT') || $CFG->debug > 7 || $CFG->perfdebug > 7) {
                    return $perf['html'];
                }
                break;
        }
    }
    return $run_result;
}

    /**
     * Output basic html page.
     * @static
     * @param string $title page title
     * @param string $content page content
     * @param string $meta meta tag
     * @return string html page
     */
    public static function plain_page($title, $content, $meta = '')
    {
        if (function_exists('get_string') && function_exists('get_html_lang')) {
            $htmllang = get_html_lang();
        } else {
            $htmllang = '';
        }
        $footer = '';
        if (MDL_PERF_TEST) {
            $perfinfo = get_performance_info();
            $footer = '<footer>' . $perfinfo['html'] . '</footer>';
        }
        return '<!DOCTYPE html>
<html ' . $htmllang . '>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
' . $meta . '
<title>' . $title . '</title>
</head><body>' . $content . $footer . '</body></html>';
    }

 /**
  * Outputs the page's footer
  * @return string HTML fragment
  */
 public function footer()
 {
     $output = $this->opencontainers->pop_all_but_last(true);
     $footer = $this->opencontainers->pop('header/footer');
     // Provide some performance info if required
     $performanceinfo = '';
     if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
         $perf = get_performance_info();
         if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
             error_log("PERF: " . $perf['txt']);
         }
         if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
             $performanceinfo = $perf['html'];
         }
     }
     $footer = str_replace(self::PERFORMANCE_INFO_TOKEN, $performanceinfo, $footer);
     $footer = str_replace(self::END_HTML_TOKEN, $this->page->requires->get_end_code(), $footer);
     $this->page->set_state(moodle_page::STATE_DONE);
     return $output . $footer;
 }

    /**
     * Returns html to render footer
     *
     * @return string
     */
    public function footer() {
        global $CFG;

        $output = $this->container_end_all(true);

        $footer = $this->opencontainers->pop('header/footer');

        // Provide some performance info if required.
        $performanceinfo = '';
        if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
            $perf = get_performance_info();

            // Deprecated function. Display: The use of function error_log() is forbidden.
            // if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {.
            // error_log("PERF: " . $perf['txt']);.
            // }.

            if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
                $performanceinfo = theme_adaptable_performance_output($perf);
            }
        }

        $footer = str_replace($this->unique_performance_info_token, $performanceinfo, $footer);

        $footer = str_replace($this->unique_end_html_token, $this->page->requires->get_end_code(), $footer);

        $this->page->set_state(moodle_page::STATE_DONE);

        return $output . $footer;
    }