PHP: exif_thumbnail function - 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.

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';
}
?>

exif_thumbnail

Description

Parameters

Return Values

ChangeLog

Examples

See Also