Here is sample function that creates thumbnail of source JPEG file. Thumbnail wil be in square form (with and height are the same), and original image cropped to fit in.
Parameters:
$p_thumb_file - name of the file (including path) where thumb should be saved to
$p_photo_file - nam of the source JPEG file (including path) thatthumbnail should be created of
$p_max_size - with and height (they will be the same) in pixels for thumbnail image
$p_quality - quality of jpeg thumbnail
<?php
function photoCreateCropThumb ($p_thumb_file, $p_photo_file, $p_max_size, $p_quality = 75) {
$pic = @imagecreatefromjpeg($p_photo_file);
if ($pic) {
$thumb = @imagecreatetruecolor ($p_max_size, $p_max_size) or die ("Can't create Image!");
$width = imagesx($pic);
$height = imagesy($pic);
if ($width < $height) {
$twidth = $p_max_size;
$theight = $twidth * $height / $width;
imagecopyresized($thumb, $pic, 0, 0, 0, ($height/2)-($width/2), $twidth, $theight, $width, $height);
} else {
$theight = $p_max_size;
$twidth = $theight * $width / $height;
imagecopyresized($thumb, $pic, 0, 0, ($width/2)-($height/2), 0, $twidth, $theight, $width, $height);
}
ImageJPEG ($thumb, $p_thumb_file, $p_quality);
}
}
?>
