php 한글 메뉴얼 도움말 검색 사이트 Retrieve the embedded thumbnail of a TIFF or JPEG image [function.exif-thumbnail]

설명

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.

인수

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.

반환값

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

예제

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';
}
?>

참고

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