Piwik\SettingsServer::raiseMemoryLimitIfNecessary PHP Method

    public static function raiseMemoryLimitIfNecessary()
    {
        $memoryLimit = self::getMemoryLimitValue();
        if ($memoryLimit === false) {
            return false;
        }
        $minimumMemoryLimit = Config::getInstance()->General['minimum_memory_limit'];
        if (self::isArchivePhpTriggered()) {
            // core:archive command: no time limit, high memory limit
            self::setMaxExecutionTime(0);
            $minimumMemoryLimitWhenArchiving = Config::getInstance()->General['minimum_memory_limit_when_archiving'];
            if ($memoryLimit < $minimumMemoryLimitWhenArchiving) {
                return self::setMemoryLimit($minimumMemoryLimitWhenArchiving);
            }
            return false;
        }
        if ($memoryLimit < $minimumMemoryLimit) {
            return self::setMemoryLimit($minimumMemoryLimit);
        }
        return false;
    }

 public function execute()
 {
     $label = $this->translator->translate('Installation_SystemCheckMemoryLimit');
     SettingsServer::raiseMemoryLimitIfNecessary();
     $memoryLimit = SettingsServer::getMemoryLimitValue();
     $comment = $memoryLimit . 'M';
     if ($memoryLimit >= $this->minimumMemoryLimit) {
         $status = DiagnosticResult::STATUS_OK;
     } else {
         $status = DiagnosticResult::STATUS_WARNING;
         $comment .= sprintf('<br />%s<br />%s', $this->translator->translate('Installation_SystemCheckMemoryLimitHelp'), $this->translator->translate('Installation_RestartWebServer'));
     }
     return array(DiagnosticResult::singleResult($label, $status, $comment));
 }