PHP 8.4.0 RC4 available for testing

    exif_tagname

    (PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

    exif_tagname — Lit le nom d'en-tête EXIF d'un index

    Description

    exif_tagname(int $index): string|false

    Liste de paramètres

    index

    L'id de Tag pour lequel un nom sera recherché.

    Valeurs de retour

    exif_tagname() retourne false si index n'est pas un id de tag EXIF défini, sinon elle retourne le nom de l'en-tête.

    Exemples

    Exemple #1 Exemple pour exif_tagname()

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

    L'exemple ci-dessus va afficher :

    256: ImageWidth
257: ImageLength

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    User Contributed Notes 2 notes

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    0
    abc at ed48 dot com
    13 years ago
    In association with exif_read_data:

    <?php

    # The tagnames can vary in different cameras

    $imgdir = "/path_to_img/";
    $img_file = "image_file.jpg";

    echo     $img_file . "&nbsp;&nbsp;&nbsp;<sub>TEST</sub>
    <br />"    ;
    echo     '<img src="' . $imgdir . $img_file . '" alt="'
    . $img_file . '" title="' . $img_file . '" width="400" /><br /><br />';

    $xf_data = exif_read_data($imgdir . $img_file);

    $tagg = exif_tagname(0X10F);
    echo     '<br>' . $tagg . ' >>> ' . $xf_data[$tagg];
    $tagg = exif_tagname(0X110);
    echo     '<br>' . $tagg . ' >>> ' . $xf_data[$tagg];
    $tagg = exif_tagname(0X132);
    echo     '<br>' . $tagg . ' >>> ' . $xf_data[$tagg];
    $tagg = exif_tagname(0XA002);
    echo     '<br>' . $tagg . ' >>> ' . $xf_data[$tagg] . 'px';
    $tagg = exif_tagname(0XA003);
    echo     '<br>' . $tagg . ' >>> ' . $xf_data[$tagg] . 'px';

    ?>
    up
    -2
    abc at ed48 dot com
    13 years ago
    Theoretically, 65,535 tags are possible. Although not all are used, yet. The code below lists these tags:

    <?php

    for ($id = 1; $id <= 65535; $id++)
    {
    $dec2hex = dechex($id);

    $strgx = '0x'. $dec2hex;

    if(    exif_tagname($strgx) != "")
    {
    echo     $strgx . ' ( ' . exif_tagname($strgx) . ' )<br />';
    }
    }

    ?>
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