exif_thumbnail
(PHP 4 >= 4.2.0, PHP 5)
exif_thumbnail — Retrieve the embedded thumbnail of a TIFF or JPEG image
Description
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.
Changelog
| Version | Description |
|---|---|
| 4.3.0 | The optional parameters width, height, and imagetype all became available. |
| 4.3.0 | May return thumbnails in the TIFF format. |
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';
}
?>
See Also
- exif_read_data() - Reads the EXIF headers from JPEG or TIFF
- image_type_to_mime_type() - Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype