WordPress Code

<div style="width: 500px;">
<form method="post" action="/extract-ads/" >
<table>
<tr>
<td>Select Category</td>
<td><select name="cat">
    <option value="">All</option>
    <option value="4">Option 1</option>
    <option value="5">Option 2</option>
    <option value="6">Option 3</option>
    <option value="7">Option 4</option>
    <option value="3">Option 6</option>
        <option value="8">Featured</option>
</select></td>
</tr>
<tr>
<td>Start Date:</td>
<td><input type="text" name="startdate" value="YYYY-MM-DD"/></td>
</tr>
<tr>
<td>End Date:</td>
<td><input type="text" name="enddate" value="YYYY-MM-DD"/></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="Get extract" /></td>
</tr>
</table>
</form>
</div>

<?php
if (isset($_REQUEST['cat'])){

function limit1k( $limits ) {
    return 'LIMIT 1000';
}
add_filter( 'post_limits', 'limit1k' );

    function filter_where( $where = '' ) {
        $where .= " AND post_date >= '{$_REQUEST['startdate']}' AND post_date < '{$_REQUEST['enddate']}'";
        return $where;
    }
    add_filter( 'posts_where', 'filter_where' );

$recent = get_posts("cat={$_REQUEST['cat']}&suppress_filters=0&orderby=category");

foreach( $recent as $post ){
     $ID_Code = get_post_meta($post->ID,'ID_Code',true);
     $Customer_type = get_post_meta($post->ID,'Contact_Customer_Type',true);
     $this_cat = get_the_category($post->ID);
     $permalink = get_permalink($post->ID);
     $output[] = array($ID_Code, $this_cat[0]->cat_name, trim(strip_tags($post->post_content)), $Customer_type, $permalink, trim(strip_tags($post->post_content)).' Ad Code: '.$ID_Code."\n\n");
}

function custom_sort($a, $b)
  {
    $retval = strnatcmp($a[1], $b[1]);
    if(!$retval) return strnatcmp($a[3], $b[3]);
    return $retval;
  }
usort($output, 'custom_sort');

array_unshift($output, array("'ID_Code", 'Category', 'Content', 'Customer Type', 'URL', 'Formatted Data'));

//print_r($output);


$fp = fopen('/home/public_html/wp-content/themes/fta/downloads/report.csv', 'w+');

foreach ($output as $fields) {
    fputcsv($fp, $fields);
}

fclose($fp);
echo '<p>The report file has been updated.  <a href="/wp-content/themes/fta/downloads/report.csv">Dowload here</a>.</p>';
}
?>