PHP Stuff
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Basic form structure
--------------------
Use $_REQUEST['formfield'] to pull data

<?php
if ((is_array($_REQUEST)) && ($_REQUEST['submit'] == "")) {
?>
   # Print the form
<input type="SUBMIT" value="Submit" name="submit">
<input type="RESET" value="Reset" name="reset">
<?php
} else {
   # Parse the form
?>

File manipulation
-----------------
Writing
-------
    $filename = "/path/to/file";
    if (is_writable($file)) {
        $file = fopen($file,"w");
        $string = "This is a test string";
        if (!fwrite($file, $string)) {
            echo "Error writing file<br />";
        }
    }
    fclose($file);

Reading from a command
----------------------
$command = "/path/to/command";
$fp = popen ($command, "r");
while (!feof($fp)){
    $read = fgets($fp, 2096);
    $read = rtrim($read) ;
    if ( strlen($read)>0 ) {
        #$result .= "$read\n" ;
        $results[] = $read;
    }
}
pclose($fp) ;

Reading all files in a directory
--------------------------------
if (is_dir($dir)) {
        if ($dh = opendir($dir)) {
                while (($file = readdir($dh)) !== false) {
                        # blah
                }
                closedir($dh);
        }
}

Variable manipulation
---------------------
Joining an array together into a string
   $str = implode(":", $array);

Search and replace on a string
   $str = str_replace("search","replace",$origstr);

Looping over all elements in an array
   while ($ent = current($array)) {
      echo key($array).'='.$ent.'<br />' if $debug;
      next($array);
   }

   foreach ( $results as $ent ) {
       # Do something with $ent
   }

Matching
--------
preg_match("/^(.*)@(.*)$/", $string, $match)
First match is $match[1], second is $match[2], etc