Php/docs/function.exif-thumbnail
exif_thumbnail
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
exif_thumbnail — Retrieve the embedded thumbnail of an image
Description
exif_thumbnail
( resource|string $file
[, int &$width = NULL
[, int &$height = NULL
[, int &$image_type = NULL
]]] ) : string|false
exif_thumbnail() reads the embedded thumbnail of an 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
file- The location of the image file. This can either be a path to the file or a stream resource.
width- The return width of the returned thumbnail.
height- The returned height of the returned thumbnail.
image_type- 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$image = exif_thumbnail('/path/to/image.jpg', $width, $height, $type);if ($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';}?>
Changelog
| Version | Description |
|---|---|
| 7.2.0 | The file parameter now supports both local files
and stream resources. |
Notes
Note:
If the
fileis used to pass a stream to this function, then the stream must be seekable. Note that the file pointer position is not changed after this function returns.
See Also
- exif_read_data() - Reads the EXIF headers from an image file
- image_type_to_mime_type() - Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype
