he encontrado este script que es un lujo
Hace justamente eso
1-Sube un archivo
2-lo achica hace una copia de la version mas pequena
3-luego muestra un imagen pequena que es un link a la imagen original.
El unico defecto es que solo acepta imagenes jpg y no gif.
codigo
<body>
<?php
if(isset($_POST['Submit']))
{
$size = 150; // the thumbnail height
$filedir = 'uploads/'; // the directory for the original image
$thumbdir = 'uploads/'; // the directory for the thumbnail image
$prefix = 'small_'; // the prefix to be added to the original name
$maxfile = '2000000';
$mode = '0666';
$userfile_name = $_FILES['image']['name'];
$userfile_tmp = $_FILES['image']['tmp_name'];
$userfile_size = $_FILES['image']['size'];
$userfile_type = $_FILES['image']['type'];
if (isset($_FILES['image']['name']))
{
$prod_img = $filedir.$userfile_name;
$prod_img_thumb = $thumbdir.$prefix.$userfile_name;
move_uploaded_file($userfile_tmp, $prod_img);
chmod ($prod_img, octdec($mode));
$sizes = getimagesize($prod_img);
$aspect_ratio = $sizes[1]/$sizes[0];
if ($sizes[1] <= $size)
{
$new_width = $sizes[0];
$new_height = $sizes[1];
}else{
$new_height = $size;
$new_width = abs($new_height/$aspect_ratio);
}
$destimg=ImageCreateTrueColor($new_width,$new_heig ht)
or die('Problem In Creating image');
$srcimg=ImageCreateFromJPEG($prod_img)
or die('Problem In opening Source Image');
if(function_exists('imagecopyresampled'))
{
imagecopyresampled($destimg,$srcimg,0,0,0,0,
$new_width,$new_height,ImageSX($srcimg),ImageSY($s rcimg))
or die('Problem In resizing');
}else{
Imagecopyresized($destimg,$srcimg,0,0,0,0,
$new_width,$new_height,ImageSX($srcimg),ImageSY($s rcimg))
or die('Problem In resizing');
}
ImageJPEG($destimg,$prod_img_thumb,90)
or die('Problem In saving');
imagedestroy($destimg);
}
echo '
<a href="'.$prod_img.'">
<img src="'.$prod_img_thumb.'" width="'.$new_width.'"
heigt="'.$new_height.'">
</a>';
}else{
echo '
<form method="POST" action="'.$_SERVER['PHP_SELF'].'"
enctype="multipart/form-data">
<input type="file" name="image"><p>
<input type="Submit" name="Submit" value="Submit">
</form>';
}
?>
</body>
</html>
