exif_thumbnail
(PHP 4 >= 4.2.0, PHP 5)
exif_thumbnail -- Retrieve the embedded thumbnail of a TIFF or JPEG image
Description
string
exif_thumbnail ( string filename [, int &width [, int &height [, int &imagetype]]] )
exif_thumbnail() reads the embedded thumbnail of a TIFF or JPEG image.
If you want to deliver thumbnails through this function, you should send the mimetype information using the header() function.
It is possible that exif_thumbnail() cannot create an image but can determine its size. In this case, the return value is FALSE but width and height are set.
Parameters
- filename
The name of the image file being read. This image contains an embedded thumbnail.
- width
The return width of the returned thumbnail.
- height
The returned height of the returned thumbnail.
- imagetype
The returned image type of the returned thumbnail. This is either TIFF or JPEG.
Return Values
Returns the embedded thumbnail, or FALSE if the image contains no thumbnail.
Examples
Example 1. exif_thumbnail() example <?php
if (array_key_exists('file', $_REQUEST)) {
$image = exif_thumbnail($_REQUEST['file'], $width, $height, $type);
} else {
$image = false;
}
if ($image!==false) {
header('Content-type: ' .image_type_to_mime_type($type));
echo $image;
exit;
} else {
// no thumbnail available, handle the error here
echo 'No thumbnail available';
}
?> |
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