Error in function structure, blank page result ?

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Peuplarchie
Forum Contributor
Posts: 148
Joined: Sat Feb 04, 2006 10:49 pm

Error in function structure, blank page result ?

Post by Peuplarchie »

Good day to you all,
here I'm trying to add to a listing directory code, another piece of code that send the list result to an html page.

It's seems like the "sending to the other page code never get executed ?

I always have this function proble can somebody so me my mistake !


Here is my code :

Code: Select all

 
 
 
 
<?php
 
error_reporting(E_ALL);
ini_set("display_errors", "on");
 
        set_time_limit(0);
        
$directory = "Art/";
 
 
function dirList ($directory)
{
 
    //create 2 arrays - one for folders and one for files
   $folders = array();
   $files = array();
 
    // create a handler for the directory
    $handler = opendir($directory);
 
    // keep going until all files in directory have been read
while (false !== ($file = readdir($handler))) {  
 
        // if $file isn't this directory or its parent,
        // add it to the results array
        if ($file != '.' && $file != '..')
       
        // If file is directory, mark it in bold.
 
       if(is_dir($directory.$file)) {
        array_push($folders,$file);
        
            if (time() - filemtime($directory.$file) < 604800) {
    $folder_modified[] = "<span style=\"color:#DB1212;\"><li><div class=\"folder\"><img src=\"plus_icon.gif\"  onclick=\"Toggle('".preg_replace('/\//','_',$directory."".$file)."'); return false;\" /><b>".$file."</b></div>";
} elseif (time() - filemtime($directory.$file) < 31556926) {
    $folder_modified[] = "<span style=\"color:#003366;\"><li><div class=\"folder\"><img src=\"plus_icon.gif\"  onclick=\"Toggle('".preg_replace('/\//','_',$directory."".$file)."'); return false;\" /><b>".$file."</b></div>";
} else {$folder_modified[] = "<span style=\"color:#000000;\"><li><div class=\"folder\"><img src=\"plus_icon.gif\"  onclick=\"Toggle('".preg_replace('/\//','_',$directory."".$file)."'); return false;\" /><b>".$file."</b></div>";}
 
        
       
        // Else not styled
        }else{
        array_push($files,$file);
     $filenamecor = substr($file, 0, -4);
    if (time() - filemtime($directory.$file) < 604800) {
    $file_modified[] = '<span style="color:#DB1212;">'.$filenamecor.'<span>';
} elseif (time() - filemtime($directory.$file) < 31556926) {
    $file_modified[] = '<span style="color:#003366;">'.$filenamecor.'<span>';
} else {$file_modified[] = '<span style="color:#000000;">'.$filenamecor.'<span>';}
 
 
    }
    }
 
$output = "";
 
    $output .= "<ul id=\"".preg_replace('/\//','_',substr($directory,0,strlen($directory)-1))."\">\n"; //start a new unordered list for every iteration through dirList
 
$dircor = $directory;
    // tidy up: close the handler
    closedir($handler);
    foreach($folders as $folder=>$file) {
        
      $output .= "<li><div class=\"folder\">".$folder_modified[$folder]."</div>"; //echo the folder name enclosed in a list item
        dirList($directory.$file.'/'); //loop through the contents of $folder
      $output .= "</li>\n"; //close this list item after all files and folders in $folder have been looped through
   
   
    }
 
    foreach($files as $key=>$file) {
 
      $output .= "<li><a href=\"index.html\" onclick=\"load('image_view.php?dir=".$dircor."&file=".$file."','boxdisp');return false;\">&nbsp;".$file_modified[$key]."</a></li>\n"; //echo the file name enclosed in a list item
    }
 
 
    $output .= "</ul>\n"; //close the unordered list
 
     return $output;
 
$filename = 'menu.html';
// Let's make sure the file exists and is writable first.
if (is_writable($filename)) {
 
    // In our example we're opening $filename in append mode.
    // The file pointer is at the bottom of the file hence
    // that's where $somecontent will go when we fwrite() it.
    if (!$handle = fopen($filename, 'a')) {
         echo "Cannot open file ($filename)";
         exit;
    }
 
    // Write $somecontent to our opened file.
    if (fwrite($handle,$output) === FALSE) {
        echo "Cannot write to file ($filename)";
        exit;
    }
 
    echo "Success, wrote () to file (".$filename.")";
 
    fclose($handle);
 
} else {
    echo "The file ".$filename." is not writable";
}
 
}
    
 
dirList ($directory);
    
 
 
 
 
?>
 
 
the result of this is a blank page.


Thanks !
User avatar
califdon
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Posts: 4484
Joined: Thu Nov 09, 2006 8:30 pm
Location: California, USA

Re: Error in function structure, blank page result ?

Post by califdon »

I've only looked at your code briefly, but it appears that you wrote a function that returns a concatenated string. If that is what you intended to do, then you need to output the string using echo or print. What you may be misunderstanding is what a function does. It just creates a value. What you do with that value is something entirely different. In fact, in this case, I see no purpose in using a function at all. You could simply write your code to read the directory and do whatever else you're doing there.
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