performance - How can I speed up my PHP based website? -

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i built small php based site scratch, yay me! given size of it, it's running little slower expected.

i have files/folders organized this:

  • articles [folder]
  • css [folder]
  • html [folder]
  • images [folder]
  • js [folder]
  • photography [folder]
  • resources [folder]
  • articles.php [file]
  • bio.php [file]
  • contact.php [file]
  • content.php [file]
  • favicon.ico
  • footer.php [file]
  • header.php [file]
  • index.php [file]
  • photography.php [file]

and of php files coded this:

<?php  $thispage="writing";  include("header.php");   $page = $_get['article']; $file = "articles/".$page.".html"; if(file_exists($file)) {   include($file); } else {   print "404 error. page not exist"; }  function issafeinclude($x) {     if(strpos($x, "/../") !== false || strpos($x, "../") === 0 || strpos($x, "/..") == (strlen($x) - 3) || $x == '..')         return false;     else         return true; }  //include("html/articles-left.html");  ?>  <div id="article-nav-container">          <ul id="article-nav-pg">             <li><a href="articles.php?article=article_name1">1</a></li>             <li><a href="articles.php?article=article_name2">2</a></li>             <li><a href="articles.php?article=article_name3">3</a></li>             <li><a href="articles.php?article=article_name4">4</a></li>             <li><a href="articles.php?article=article_name5">5</a></li>             <li><a href="articles.php?article=article_name6">6</a></li>         </ul>          <script type="text/javascript">                 $(document).ready(function() {             var loc = window.location.href; // url of page we're looking @             $('#article-nav-pg a').each(function() {                 if (loc.indexof(this.href) !== -1) { // if url contains href of anchor                         $(this).addclass('selected'); // mark selected                 }             });         });         </script>        </div><!-- end articles nav -->       <p id="left-description"><img src="images/side-descrip-stories.jpg" width="20" height="90" alt="story description" /></p>  <?php  include("footer.php");  ?>

some files have html codes directly inside. appreciate advice on how improve speed on small php based site.

thanks

first of need measure:

  • how slow "slow"?
  • is slow consistent?
  • does site become very slow when many users visit it?

then find bottlenecks, design changes, implement changes , measure again. @ point ought specify how want improve things , after stop.

most of times bottleneck database. database queries optimization subject whole book, if use mysql have @ slow query log. quantify site's performance characteristics have @ jmeter.

edit: found out (from source) not using mysql. need measure , provide numbers. how page render time start with?

on unrelated note though, careful direct file inclusion security issue you've got there.


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