Trouble with Next/Previous links

[foucquet]

I am trying to create a gallery page, one photo on the page with Next/Previous links either above or below but am having a little local difficulty. This is what I have:-

 

//>>> Set up arrays and variables <<<
$piccies = array();
$exif = array();
$exifdata = array();

$pic = 0;
$img ='';
$date = '';
$time = '';
$caption = '';
$copyright ='';
$imageid = 1;
$first = 1;
$last = 5;
$self = $_SERVER['PHP_SELF'] . "?imageid=";

//>>> Read images from folder and assign to the array $piccies[] <<<
$piccies = read_folder();


//>>> Find image and extract the Exif info <<<
$exif = read_exif_info($piccies, $pic);



//>> Populate with required info from $exifdata with required info from $exif
$exifdata = populate_exif_data($exif, $date, $time);

$img = substr_replace($img, "", 0, 2);

?>

<div id="pict">
<img src="<?php echo $img; ?>" />
  <?php
  echo "<p>" . $caption . "</p>";
  if ($imageid < $last) {
    echo "<a href=" . $self . ($imageid + 1) . "><h2>Next</h2></a>";
}
if ($imageid > $first) {
    echo "<a href=" . $self . ($imageid - 1) . "><h2>Previous</h2></a>";
}
  ?>
</div>

 

It puts the 'Next' link in fine, but when clicked the link goes to the Parent directory:-

 

Index of /php/gallery

[iCO] Name Last modified Size Description

[DIR] Parent Directory -

[ ] functions.php 27-Oct-2011 09:25 2.1K

[ ] gallery index.php 27-Oct-2011 09:45 1.8K

[DIR] images/ 26-Oct-2011 16:00 -

 

and when I look at the source I see that the link has not been constructed as I expected. This is the source:-

 

<div id="pict">

<img src="images/blue sky.jpg" />
  <p>Blue Sky over Auld Reekie</p><a href=/php/gallery test.php?imageid=2><h2>Next</h2></a></div>

 

where '/php/gallery test.php' is showing I expected 'images/filename.jpg' etc. and I just can't figureout what I have done wrong...