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| Author |
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The Ragin' South Asian
Head Poncho
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 Posted: Fri Feb 04, 2005 1:43 am Post subject: 1 |
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I'm writing this archive type thing for a friend since i have copious amounts of free time.
basically there's a folder with sequentially named files, and this is supposed to display the one with the highest number, which it does.
but the navigation doesn't work- i can't go back or foward in the sequence.
| Code: |
<td colspan=2>
<?php
$self = $_SERVER['PHP_SELF'];
$base="/Images/";
$num=CountFiles("./Images", "GIF");
if(!isSet($dispnum))
{$dispnum=sprintf("%03s",$num);
$dispnext=sprintf("%03s",$dispnum+1);
$dispprev=sprintf("%03s",$dispnum-1);
function CountFiles($dir, $type)
{
if(!($dh =@opendir("$dir")))
return false; // directory does not exist
// read the directory contents searching for "type" files
// and count how many are found:
$files = 0;
while ( ! ( ($fn = readdir($dh)) === false ) )
{
$f = strrev($fn);
$ext = substr($f, 0, strpos($f,"."));
$f_ext = strrev($ext);
if(( strcasecmp($f_ext, $type) == 0 )) $files++;
}
closedir($dh);
return $files;
}
?>
<img src="<?php print("$base$dispnum.GIF"); ?>">
</td>
</tr>
<tr>
<td>
<?php
if($dispnum>"001")
{
?>
<a href="<?php echo("$self?dispnum=$dispprev"); ?>">Previous</a>
<?php
}
else
{
print("Previous");
}
?>
</td>
<td>
<div align=right>
<?php
if($dispnum==$num)
{
print("Next");
}
else
{
?>
<a href="<?php echo("$self?dispnum=$dispnext"); ?>">Next</a>
<?php
}
?>
</div>
</td>
</tr>
</table>
</body>
</html> |
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Bicho the Inhaler
Daedalian Member
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| Posted: Fri Feb 04, 2005 2:05 am Post subject: 2 |
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I think you have an unterminated left brace: you probably want a right brace after
$dispnum=sprintf("%03s",$num);
It's kind of surprising that the parser didn't catch that (there are 6 right braces vs. 7 left braces), unless I missed something else. |
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The Ragin' South Asian
Head Poncho
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| Posted: Fri Feb 04, 2005 2:19 am Post subject: 3 |
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good catch, but i actually just screwed that up when pasting it in or something
my problem is with this stuff at the end
| Code: |
<tr>
<td>
<?php
if($dispnum>"001")
{
?>
<a href="<?php echo("$self?dispnum=$dispprev"); ?>">Previous</a>
<?php
}
else
{
print("Previous");
}
?>
</td>
<td>
<div align=right>
<?php
if($dispnum==$num)
{
print("Next");
}
else
{
?>
<a href="<?php echo("$self?dispnum=$dispnext"); ?>">Next</a>
<?php
}
?>
</div>
</td>
</tr> |
which i think should change the image, but for whatever reason doesn't
it doesn't generate an error or anything. it changes the url but not the picture. |
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The Ragin' South Asian
Head Poncho
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| Posted: Sun Feb 06, 2005 8:20 am Post subject: 4 |
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it had something to do with global variables or somesuch
adding $dispnum = $_GET['dispnum']; to the beginning fixed it |
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