<div>
You'd have to write it from scratch, but here's a generic class that I use as my starting point whenever I need to write a program that automatically recurses through a filesystem / folder structure and perform a callback on each file/folder. It's meant to be set up so that you can just create a callback function and then assign it to &quot;fnToFile&quot;, set the starting folder and hit run. However, since you need to test to see if you're at the bottom level first, you may need some additional code to do that. Feel free to take this code and chop it up as necessary. 
 

<pre><code class="code-10 nolinks" id="code-20-41411562-1">class FilesystemApply
{
 public $startDir;
 public $recurse;
 public $fnToFile = &quot;&quot;;
 public $fnBeforeDir = &quot;&quot;;
 public $fnAfterDir = &quot;&quot;;
 public $fnToFile_Params = array();
 
 public function __construct($startDir = &quot;.&quot;, $recurse = true)
 {
 if($startDir)
 {
 $this-&gt;_changeDir($startDir);
 }
 
 $this-&gt;recurse = $recurse;
 }
 
 // Wrapper that performs self-checks
 public function run($changeDir = null,$fnToFile = null)
 {
 // Let user specify the start dir at run time
 if($changeDir !== null) { $this-&gt;_changeDir($changeDir); }
 
 // Let user specify the &quot;fnToFile&quot; function at run time
 if($fnToFile !== null) { $this-&gt;fnToFile = $fnToFile; }

 // Let user specify additional &quot;fnToFile&quot; function parameters at run time
 $args = func_get_args();
 if(count($args) &gt; 2) { $this-&gt;fnToFile_Params = array_slice($args,2); } else { $this-&gt;fnToFile_Params = array(); }
 
 // Self checks
 if($this-&gt;fnToFile &amp;&amp; !function_exists($this-&gt;fnToFile)) throw new Exception(&quot;No such function!&quot;);
 if($this-&gt;fnBeforeDir &amp;&amp; !function_exists($this-&gt;fnBeforeDir)) throw new Exception(&quot;No such function!&quot;);
 if($this-&gt;fnAfterDir &amp;&amp; !function_exists($this-&gt;fnAfterDir)) throw new Exception(&quot;No such function!&quot;);
 
 // Looks good, run it!
 $this-&gt;_run($this-&gt;startDir);
 }

 // Quick sanity check
 private function _changeDir($dir)
 {
 // Make sure we've got a valid dir
 if(strlen($dir) == 0) { throw new Exception(&quot;Directory cannot be blank!&quot;); }
 if(!file_exists($dir)) { throw new Exception(&quot;{$dir} does not exist!&quot;); }
 if(!is_readable($dir)) { throw new Exception(&quot;{$dir} is not readable!&quot;); }
 
 // If we pass the tests, set the starting dir!
 $this-&gt;startDir = $dir;
 }
 
 // Does the real work
 private function _run($dir)
 {
 $dh = opendir($dir);
 while(($file = readdir($dh)) !== false)
 {
 // Skip . and ..
 if(($file == &quot;.&quot;) || ($file == &quot;..&quot;)) continue;
 
 $fullFile = $dir . DIRECTORY_SEPARATOR . $file;
 if(is_dir($fullFile) &amp;&amp; $this-&gt;recurse)
 {
 // Hook: Before recursing into the directory
 if($this-&gt;fnBeforeDir) { call_user_func($this-&gt;fnBeforeDir,$fullFile); }
 
 // Recurse into the directory
 $this-&gt;_run($fullFile);
 
 // Hook: After recursing into the directory
 if($this-&gt;fnAfterDir) { call_user_func($this-&gt;fnAfterDir,$fullFile); }
 }
 else
 {
 // Hook: Per file
 if($this-&gt;fnToFile) { call_user_func($this-&gt;fnToFile,$fullFile,$this-&gt;fnToFile_Params); }
 }
 }
 closedir($dh);
 }
}
</code></pre>
</div>

<div>
Although it's late and I don't have time to work up an example, here is a hint from an old script. 

<pre><code class="code-1 nolinks" id="code-20-41411669-1">// PUT THIS SCRIPT IN THE WEB ROOT DIRECTORY
$path = realpath(getcwd());
$objs = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::SELF_FIRST);
/* THEN ITERATE OVER $objs */
</code></pre>
</div>

<div>
This might do the job. &nbsp;Put the search string on line 14 and process the list of files on line 36. &nbsp;This script will only traverse directories that are at or below its location, so if you put it into the web root it will not go above the web root. 

<pre><code class="code-10 nolinks" id="code-20-41412117-1">&lt;?php // temp_rkorts.php
/**
 * RECURSIVELY TRAVERSE DIRECTORIES IN THE WEB TREE
 * TO FIND ALL FILES WITH &quot;rkorts&quot; IN THE NAME, CASE-INSENSITIVE
 *
 * http://php.net/manual/en/class.recursivedirectoryiterator.php#85805
 * http://php.net/manual/en/class.splfileinfo.php
 */

// PUT THIS SCRIPT IN THE WEB ROOT DIRECTORY
$path = realpath(getcwd());

// THE SEARCH STRING
$signal = '/rKorts/i';

// THE COLLECTION OF ALL FILE OBJECTS BELOW THIS DIRECTORY
$objs = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::SELF_FIRST);

// ITERATE OVER THE OBJECTS
$paths = [];
foreach($objs as $name =&gt; $obj)
{
 // COLLECT ONLY THE MATCHING PATH NAMES
 if (preg_match($signal, $name))
 {
 $paths[] = $obj-&gt;getPathName();
 }
}

// SHOW WHAT WE FOUND, IF ANYTHING
echo '&lt;pre&gt;';
if (!empty($paths))
{
 $kount = count($paths);
 echo &quot;&lt;h3&gt;Match for $signal found in $kount filepaths.&lt;/h3&gt;&quot;;
 print_r($paths);
}
// OR IF WE FOUND NOTHING
else echo &quot;&lt;h3&gt;No match for $signal found.&lt;/h3&gt;&quot;;
</code></pre>
</div>

<div>
Thanks, Ray, 
 
I'll try that later. 
 
Richard
</div>

<div>
Ray, 
 
That works PERFECTLY to find all occurrences of the file. 
 
What I need to do is replace the found file with another. 
 
How can I tweak this to do that? 
 
Thanks
</div>

<div>
I don't understand the part about &quot;replace the file.&quot; &nbsp;What would you use for the replacement? &nbsp;There may be a number of good strategies - you could overwrite the files with something like file_put_contents() or you might rename the files and save a new version. &nbsp;It just depends on what you want to have in the directories after the script is run.
</div>

<div>
Ray, 
 
The situation is this. 
 
I used your technique &amp;&nbsp;it showed around 50 occurrences of the file. 
 
The customer claims &quot;file xyz is corrupt&quot;, please use this new version. 
 
So my thought was a &quot;replace all&quot; type capability. 
 
This is not the only instance where there are multiple occurrences of the same file. 
 
So my thinking is to have an admin page where the customer can upload a new version of a file &amp;&nbsp;the server php code finds all existing instances &amp;&nbsp;replaces them with the new uploaded one. 
 
But as I think of this it seems TERRIBLY clumsy, I probably need to think through a different strategy. Have each file on the Server ONCE &amp;&nbsp;develop a pointing method. 
 
Thanks, 
 
Richard
</div>

<div>
I have convinced the customer to use a different approach where each file will appear EXACTLY once &amp;&nbsp;the navigation to it will be determined programatically with a database table. 
 
Thanks
</div>

<div>
Good! &nbsp;I think that is a much more promising approach! &nbsp;Best of luck with it, ~Ray
</div>

<div>
<div class="content wysiwyg-content">
I am looking for a php function or class that does this: 
 
Given a folder (directory), it finds &amp;&nbsp;replaces all occurrences of a SPECIFIC file name in all the bottom level folders of a tree structure. 
 
In the case I am presently working with there are normally 4 or 5 levels deep of subdirectories under the highest level. 
 
Does something like this exist? 
 
Or do I have to program it from scratch? 
 
Thanks
</div>
</div>

I am looking for a php function or class that does this:

Given a folder (directory), it finds & replaces all occurrences of a SPECIFIC file name in all the bottom level folders of a tree structure.

In the case I am presently working with there are normally 4 or 5 levels deep of subdirectories under the highest level.

Does something like this exist?

Or do I have to program it from scratch?

Thanks

Directory Structure file search &amp; replace

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

Directory Structure file search &amp; replace

Directory Structure file search & replace