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exif_thumbnail

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exif_thumbnail

(PHP 4 >= 4.2.0, PHP 5)

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

Descripción

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.

Lista de parámetros

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.

Valores retornados

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

Registro de cambios

Versión	Descripción
4.3.0	The optional parameters `width`, `height`, and `imagetype` all became available.
4.3.0	May return thumbnails in the TIFF format.

Ejemplos

Ejemplo 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';
}
?>

Ver también

exif_read_data()

image_type_to_mime_type()

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exif_tagname	Subir	read_exif_data