exif_tagname
read_exif_data
Exif Функции
PHP Manual

# exif_thumbnail

(PHP 4 >= 4.2.0, PHP 5)

exif_thumbnail — Retrieve the embedded thumbnail of a TIFF or JPEG image

### Описание

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.

### Список параметров

`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.

### Возвращаемые значения

Returns the embedded thumbnail, or `FALSE` if the image contains no thumbnail.

### Список изменений

Версия | Описание
--- | ---
4.3.0 | The optional parameters `width` , `height` , and `imagetype` all became available.
4.3.0 | May return thumbnails in the TIFF format.

### Примеры

Пример #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';
}
?>`

### Смотрите также

- exif_read_data()
- image_type_to_mime_type()

exif_tagname
read_exif_data
Exif Функции
PHP Manual