[SOLVED] Compare arrays

[Dustin013]

I have a function that is returning the directory names from a given path. These directory names are placed into an array. I would like to call the function twice and compare the contents of the array...

 

(The below code works, just wanted to give an example of what I am trying to do)

 

function returnDirectory($dirname) {
   
   $ignore= array('.', '..', '.cpan', '.cpcpan', 'MySQL-install'); 
   $files = array();
   if($handle = opendir($dirname)) {
       while(false !== ($file = readdir($handle))){
       if(!in_array($file, $ignore)){
               $files[] = $file;
            }
       }
       closedir($handle);
   }
   return($files); // this will return an array of files
}

// List files in home directory
$filearr = returnDirectory('/home'); 
sort($filearr); 
foreach($filearr as $file){ 
  echo $file."<br />";
}
// End listing files for home directory

// If I want to also scan another directory using the same function
// List files in svn directory
$filearr2 = returnDirectory('/svn'); 
sort($filearr2); 
foreach($filearr2 as $file){ 
  echo $file."<br />";
}
// End listing files for svn directory

 

Basically, what I would like to do, is compare the two arrays.

 

What I am trying to do is make two listings, one that outputs directories that "ARE IN BOTH" the /home directory and the /svn directory. The other listing would show the directories that are in the home directory, but "NOT" in the SVN directory. So all and all, I guess I just need to figure out the best way to compare the arrays. I have looked at the array_search function, which I would technically use but it seems rather inefficient. Any suggestions are greatly appreciated!

 

Any suggestions on how to get this accomplished?

[sloth456]

I'm afraid I haven't taken the time to look over your code in detail, but would in_array() be what you're looking for?

[sasa]

look functions

array_diff()

array_intersect()

 

[Dustin013]

Actually, went outside and smoked a cig and gave it some thought... here is what I have done and it worked ;-)

 

<?php 

// Set paths to home and SVN
$homedir = "/home";
$svndir = "/svn";

function returnDirectory($dirname) {
   
   $ignore= array('.', '..'); 
   $files = array();
   if($handle = opendir($dirname)) {
       while(false !== ($file = readdir($handle))){
       if(!in_array($file, $ignore)){
               $files[] = $file;
            }
       }
       closedir($handle);
   }
   return($files); // this will return an array of files
}

// Build array for home directory
$homearr = returnDirectory($homedir); 
sort($homearr); 

// Build array for svn directory
$svnarr = returnDirectory($svndir); 
sort($svnarr);

// Output files that are IN the home directory and NOT in the SVN directory 
echo '<br /><b>Projects currently NOT in SVN</b><br />';
foreach($homearr as $file){ 	
if(!in_array($file, $svnarr)){
	$files[] = $file;
	echo $file."<br />";
}
}
// Output the names of directories that are in BOTH the HOME directory and SVN directory
echo '<br /><b>Projects currently in SVN</b><br />';
foreach($homearr as $file){ 	
if(in_array($file, $svnarr)){
	$files[] = $file;
	echo $file."<br />";
}
}


?>