exif_tagname

Get the header name for an index

&reftitle.description; `string` `exif_tagname` `int` `index`
&reftitle.parameters;

`index`

- The Tag ID for which a Tag Name will be looked up.

&reftitle.returnvalues;

Returns the header name, or &false; if `index` is not a defined EXIF tag id.

&reftitle.examples;

### `exif_tagname` example

    <?php
    echo "256: ".exif_tagname(256).PHP_EOL;
    echo "257: ".exif_tagname(257).PHP_EOL;
    ?>

&example.outputs;

    256: ImageWidth
    257: ImageLength

&reftitle.seealso;

- `exif_imagetype`
- EXIF Specification
- EXIF Tags