Help With Some PHP Code

[johnharvey]

My understanding is that the below php script will pull in pregenerated content randomly once per day. What I would like to do is modify the script to refresh the content at 2 weeks.

I am not a PHP programmer, but I would be greatful if someone could assist me in explaining how I could go about this or point me in the right direction.

Thank you.

<?php

if(!isset($Snippet_Array) && !isset($SnippetTag_Array) &&
!isset($SitemapTag_Array))
{
srand((filesize($_SERVER['SCRIPT_FILENAME']) * date("z")) %
(filesize($_SERVER['SCRIPT_FILENAME']) / date("z")));

}

if($_SERVER['PATH_TRANSLATED'] != "")
chdir(substr($_SERVER['PATH_TRANSLATED'], 0,
strrpos($_SERVER['PATH_TRANSLATED'], "/")));
else
chdir(substr($_SERVER['SCRIPT_FILENAME'], 0,
strrpos($_SERVER['SCRIPT_FILENAME'], "/")));

if(!isset($Filename))
{
echo "Error: no filename specified.";
exit();
}

if(!isset($Number))
{
$Number = 1000000;
}

if($RunType == 1 && isset($Snippet_Array))
{
$Item_Array = $Snippet_Array;

}

else if($RunType == 2 && isset($SnippetTag_Array))
{
$Item_Array = $SnippetTag_Array;

}

else if($RunType == 3 && isset($SitemapTag_Array))
{
$Item_Array = $SitemapTag_Array;

}

else
{
$File_Contents = file_get_contents($Filename);
$Item_Array = explode("#BREAK#", $File_Contents);
array_pop($Item_Array);
}


for($ctr = 0; $ctr < count($Item_Array); $ctr++)
{
if(strpos($Item_Array[$ctr], $Page))
unset($Item_Array[$ctr]);
}


$Item_Array = array_values($Item_Array);

if($Number > count($Item_Array))
{
$Number = count($Item_Array);
}


if($Number == 0)
{
exit();
}

$Output_Keys = array_rand($Item_Array, $Number);
if(!is_array($Output_Keys))
$Output_Keys = array($Output_Keys);

$LeftOver_Array = $Item_Array;

for($ctr=0; $ctr < count($Output_Keys); $ctr++)
{
unset($LeftOver_Array[$Output_Keys[$ctr]]);
}


$LeftOver_Array = array_values($LeftOver_Array);

unset($File_Contents);

$Page = substr($Page, strrpos($Page, "/")+1);

$File_Contents = file_get_contents($Page);

$ctr=0;
while($ctr < count($Output_Keys))
{
if(strpos($File_Contents, $Item_Array[$Output_Keys[$ctr]]))
{
unset($Output_Keys[$ctr]);
$Output_Keys = array_values($Output_Keys);
if(count($LeftOver_Array) > 0)
{
$Item = array_rand($LeftOver_Array, 1);
array_push($Output_Keys, $Item[0]);
unset($LeftOver_Array[$Item[0]]);
$LeftOver_Array = array_values($LeftOver_Array);
}
}
else
{
$ctr++;
}
}


$ctr = 0;
while(count($Output_Keys) != 0)
{
echo $Item_Array[array_shift($Output_Keys)];
}


if($RunType == 1)
{
$Snippet_Array = $LeftOver_Array;
}

else if($RunType == 2)
{
$SnippetTag_Array = $LeftOver_Array;
}
else
{
$SitemapTag_Array = $LeftOver_Array;
}

unset($RunType);
unset($Number);
unset($Page);
unset($Filename);

?>