<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 11. NuSphere PHP accelerator</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="pt02.html" title="Part II. Basic graph creation"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 11. NuSphere PHP accelerator</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Part II. Basic graph creation</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="chapter" title="Chapter 11. NuSphere PHP accelerator"><div class="titlepage"><div><div><h2 class="title"><a name="chap.php-accelerator"></a>Chapter 11. NuSphere PHP accelerator</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="ch11.html#id2537194">11.1. Introduction and purpose</a></span></dt><dt><span class="sect1"><a href="ch11s02.html">11.2. Installing PhpExpress</a></span></dt></dl></div>
        
        <p>
            </p><div class="caution" title="Caution" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Caution</h3>
                <p>The NuSphere encoded variant of the library is only included in the JpGraph
                    pro version.</p>
            </div><p>
        </p>
        <div class="sect1" title="Introduction and purpose"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2537194"></a>Introduction and purpose</h2></div></div></div>
            
            <p>One of the best way to increase the performance of large and complex PHP scripts
                is to install one of the available PHP accelerators. JpGraph supports <span class="italic">NuSphere PhpExpress</span> accelerator. In order to take
                advantage of this accelerator you must install the version of the library that is
                encoded for use with the accelerator. This version is included in the Pro-version of
                the library under the directory <code class="filename">src-encoded/</code>.</p>
            <p>If you have the Pro-version of the library there is really no good reason not to
                use the accelerated version of the library. It will reduce the load on your server
                as well as significantly decrease the run time for graph scripts. In addition it
                will also reduce some of the memory requirements needed since the parsing process
                (translating PHP to bytecode) for the library can be avoided. Furthermore <span class="italic">NuSphere PhPExpress</span> also implements a caching mechanism
                which means that often executed scripts will be kept in memory to avoid re-reading
                them from disk each time they are needed. This applies to both encoded and
                non-encoded script files.</p>
        </div>
        
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