php - How to call a function onClick of a directory

Question

i'm trying to make a file browser and i'm trying to find how to call a function when the user clicks on a directory. For starting i tried to use onClick inside a href on the class part (right before FUNCTION folderSize) having us a goal to open the path inside testDir if i click on any of the files or directories on the list but it does nothing. I'm searching for some hours now it but i can't find the solution. If someone could help i would be greatfull. Here is the index.php:

<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">

<link href="/css/myCSSfile.css" rel="stylesheet" type="text/css"> 
<link rel="shortcut icon" href="/images/dit.ico"><link rel="stylesheet" href="/css/search.css">
<link rel="stylesheet" href="/css/button.css">
<link rel="stylesheet" href="/css/button2.css">
<script type="text/javascript" src="/js/resolutionfinder.js"></script>
<script type="text/javascript" src="/js/changeInputValue.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="/js/ajaxcalls.js"></script>





<body onload='ShowDivInCenter();' onresize='ShowDivInCenter();'>

<div >
<div id="main">


    </script>
 <div id="container">

    <h1> UOP Directory Contents</h1>

  <img src="/images/logo.jpg" title="uop search engine" width="450" height="240" />
  <form action=''>
  <input type='search' id="search" name='s' autocomplete="off">

  <input type='button' id="button" value='Search' >
  </form>
  <div ></div>
  </div>

  <table >
   <thead>

    <tr>
     <th>Filename</th>
     <th>Type</th>
     <th>Size <small>(KB)</small></th>
     <th>Date Modified</th>
    </tr>
   </thead>
   <tbody>


<?php

  // Opens directory
  $rootDirectory=opendir(".");
  starter($rootDirectory);
  Function starter($myDirectory)
  {
    $testDir = 'C:\webdev\apache\htdocs\allo1';
    // Gets each entry
    while($entryName=readdir($myDirectory)) 
    {
     $dirArray[]=$entryName;
    }

    // Finds extensions of files
    function findexts ($filename) 
    {
     $filename=strtolower($filename);
     $exts=split("[/\\.]", $filename);
     $n=count($exts)-1;
     $exts=$exts[$n];
     return $exts;
    }

    // Closes directory
    closedir($myDirectory);

    // Counts elements in array
    $indexCount=count($dirArray);

    // Sorts files
    sort($dirArray);

    // Loops through the array of files
    for($index=0; $index < $indexCount; $index++) 
    {

     // Allows ./?hidden to show hidden files
     if($_SERVER['QUERY_STRING']=="hidden")
     {$hide="";
     $ahref="./";
     $atext="Hide";}
     else
     {$hide=".";
     $ahref="./?hidden";
     $atext="Show";}
     if(substr("$dirArray[$index]", 0, 1) != $hide) {

     // Gets File Names
     $name=$dirArray[$index];
     $namehref=$dirArray[$index];

     // Gets Extensions 
     $extn=findexts($dirArray[$index]); 

     // Gets file size 
     $size=number_format(filesize($dirArray[$index])/1024,2). ' KB';


     // Gets Date Modified Data
     $modtime=date("M j Y g:i A", filemtime($dirArray[$index]));
     $timekey=date("YmdHis", filemtime($dirArray[$index]));

     // Prettifies File Types, add more to suit your needs.
     switch ($extn){
      case "png": $extn="PNG Image"; break;
      case "jpg": $extn="JPEG Image"; break;
      case "svg": $extn="SVG Image"; break;
      case "gif": $extn="GIF Image"; break;
      case "ico": $extn="Windows Icon"; break;

      case "txt": $extn="Text File"; break;
      case "log": $extn="Log File"; break;
      case "htm": $extn="HTML File"; break;
      case "php": $extn="PHP Script"; break;
      case "js": $extn="Javascript"; break;
      case "css": $extn="Stylesheet"; break;
      case "pdf": $extn="PDF Document"; break;

      case "zip": $extn="ZIP Archive"; break;
      case "bak": $extn="Backup File"; break;

      default: $extn=strtoupper($extn)." File"; break;
     }

     // Separates directories
     if(is_dir($dirArray[$index])) {
      $extn="&lt;Directory&gt;"; 
      $size=folderSize($dirArray[$index]); 
      $size=number_format($size/1024,2). ' KB';
      $;
     } else {
      $;
     }

     // Cleans up . and .. directories 
     if($name=="."){$name=". (Current Directory)"; $extn="&lt;System Dir&gt;";}
     if($name==".."){$name=".. (Parent Directory)"; $extn="&lt;System Dir&gt;";}

     // Print 'em
     print("
     <tr class='$class'>
      <td><a href='#' onclick="call_php_function('./$namehref')">$name</a></td>
      <td><a href='#' onclick="call_php_function('./$namehref')">$extn</a></td>
      <td><a href='#' onclick="call_php_function('./$namehref')">$size</a></td>
      <td sorttable_customkey='$timekey'><a href='#' onclick="call_php_function('./$namehref')">$modtime</a></td>
     </tr>");
     }
    }
  }

FUNCTION call_php_function(directory) 
{
 $.post("index.php", ("dir": directory), function(data){
  alert(data); // Will output, whatever your starter-functions outputs
 });
}

FUNCTION folderSize($dir)
{
$count_size = 0;
$count = 0;
$dir_array = scandir($dir);
 foreach($dir_array as $key=>$filename){
  if($filename!=".." && $filename!="."){
    if(is_dir($dir."/".$filename)){
     $new_foldersize = foldersize($dir."/".$filename);
     $count_size = $count_size+ $new_foldersize;
    }else if(is_file($dir."/".$filename)){
     $count_size = $count_size + filesize($dir."/".$filename);
     $count++;
    }
  }
 }
return $count_size;
}


?>







  <div id="ajaxresults" ></div>
<br />
<br />
<hr >

<br />
<br />
<div id="showing"></div>
<div id="results" ></div>

  </tbody>
  </table>

  <form><input type='button' id="button" value='DownLoadAll' onClick="window.location.href='downloadZip.php?directtozip=$myDirectory&zipaki'"></form> 



</div>

</div>


</body>

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