9, November 2009

Webdigity tutorials : Search a code fragment in a directory recursive

 
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Search a code fragment in a directory recursive

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 Some times we need to search the contents of many files through php. Personally I wrote this piece of code when I was using eaccelerator, and used it to search the whole server for files that are not compiled.

Please mention that the class bellow, will perform a recursive search. So it will even parse subdirectories of the directory you will use.

Here is the main class:
Code:
<?php
class searchFileContents{
    var $dir_name = '';//The directory to search
    var $search_phrase = '';//The phrase to search in the file contents
    var $allowed_file_types = array('php','phps');//The file types that are searched
    var $foundFiles;//Files that contain the search phrase will be stored here
    var $myfiles;
    
    function search($directory, $search_phrase){
        $this->dir_name = $directory;
        $this->search_phrase = $search_phrase;
        
        $this->myfiles = $this->GetDirContents($this->dir_name);
        $this->foundFiles = array();
        
        if ( empty($this->search_phrase) ) die('Empty search phrase');
        if ( empty($this->dir_name) ) die('You must select a directory to search');
        
        foreach ( $this->myfiles as $f ){
            if ( in_array(array_pop(explode ( '.', $f )),  $this->allowed_file_types) ){
                $contents = file_get_contents($f);
                if ( strpos($contents, $this->search_phrase) !== false )
                    $this->foundFiles [] = $f;
            }
        }
        return $this->foundFiles;
    }
    
    function GetDirContents($dir){
       if (!is_dir($dir)){die ("Function GetDirContents: Problem reading : $dir!");}
       if ($root=@opendir($dir)){
           while ($file=readdir($root)){
               if($file=="." || $file==".."){continue;}
               if(is_dir($dir."/".$file)){
                   $files=array_merge($files,$this->GetDirContents($dir."/".$file));
               }else{
               $files[]=$dir."/".$file;
               }
           }
       }
       return $files;
    }
}
?>

And here is an example of usage:

Code:
$search = new searchFileContents;
$search->search('E:/', 'class');
var_dump($search->foundFiles);

In the above example we will search the whole E: disk for the word "class". Please mention the allowed_file_types property where you can put the file types that you want to be parsed. In our example we search only php and phps files.

The results are stored in the foundFiles property (array). Hope you liked this snippet :)
Do you like this tutorial?
Feel free to share it with others using Dzone or your favorite bookmarking service. You can see related discussions in our php forum
This tutorial posted by Nikolas from Sublime Directory

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