Image Thumbnails

[Ananthi]

How to create thumbnails for images dynamically

[omoutop]

You will need the gd library for this (consult your phpinfo and gd_info for further details whether it is enableed in your system or not - it usually is).

Also you will need a lot of various image functions.

I would advice to check various free scripts/classes to see how they work, and then code some script for yourself (to better suit your needs)

[cameraman]

Like omoutop said, if you have gd enabled (probably true), you use the image functions. This page at php.net shows you how to do it:
[php.net ]

[steven420]

Here is a class that can resize images:

<?php 
 
class resize 
{ 
 
function resize($width, $height, $target) 
{ 
 
if ($width > $height) 
{ 
$percentage = ($target / $width); 
} 
else 
{ 
$percentage = ($target / $height); 
} 
 
$width = round($width * $percentage); 
$height = round($height * $percentage); 
 
return "width='$width' height='$height'"; 
 
}// end function 
 
}// end class 
 
class pic_resize extends resize 
{ 
 
function pic_resize($img) 
{ 
list($width, $height) = getimagesize($img); 
$resize = new resize; 
echo '<img src="'; 
echo $img; 
echo '" '; 
echo $resize->resize($width, $height, 60); 
echo '>'; 
 
}// end function 
 
}// end class 
 
?> 

then add this to the page:

 <?php 
require('class url'); 
$picture = new pic_resize("image url"); 
?> 

[ahmedtheking]

Check out phpThumb: [phpthumb.sourceforge.net...]