Exif Функции
PHP Manual

exif_thumbnail

(PHP 4 >= 4.2.0, PHP 5)

exif_thumbnailRetrieve 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.

Параметри

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.

Връщани стойности

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

Дневник на промените

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.

Примери

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';
}
?>

Вж. също


Exif Функции
PHP Manual