Comment décoder une chaîne base64 (gif) en image dans PHP / HTML
J'ai une chaîne encodée en base64 que je voudrais convertir en image en PHP/HTML.
Voici ce que j'ai:
$data = "R0lGODdhAAGAAKIAAP38+/3h3cjN5P3HwgAAAP8AoP8AGv8EIywAAAAAAAGAAAAD.....";
echo base64_decode($data);
// OU
echo '<img src="data:image/gif;base64,' . base64_decode($data) . '" />';
Aucun de ces travaux. Aucune suggestion?
Très appréciée! Catalin
Dans le premier cas, vous devez ajouter ceci avant de faire écho aux données d'image décodées:
header("Content-type: image/gif");
Dans le deuxième cas, utilisez plutôt ceci:
echo '<img src="data:image/gif;base64,' . $data . '" />';
Question stupide: le type mime est-il correct ?? votre code base64 représente-t-il un fichier gif ????
c'est un exemple utilisant une image/png, sans php, juste du html, et ça marche:
<img alt="Embedded Image" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEEAAABBCAIAAAABlV4SAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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Essayez-le.
Maintenant, le même code base64 utilisant le php illustré ci-dessus mais en utilisant le bon type mime (image/png):
<?php
echo "<img alt=Embedded Image src=\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEEAAABBCAIAAAABlV4SAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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?>
Voici donc le code:
echo "<img alt=Embedded Image src=\"data:image/png;base64,[BASE64CODE]\" />";
Remarquez, puisque j'utilise des guillemets doubles pour la balise echo, je dois dire à php d'ignorer ceux à l'intérieur de la balise img. A part ça, tu es bon
à votre santé
PC
echo '<img src="data:image/gif;base64,' . $data . '" />'
Devrait faire l'affaire.
Vous devez utiliser la fonction header() avant de faire écho à vos données pour spécifier le type de contenu (image gif). Sinon, les navigateurs l'interpréteront comme du HTML.
Afficher l'image à l'aide de la fonction base64_encode
$ret = fopen($fullurl, 'r', true, $context);
$contents = stream_get_contents($ret);
$base64 = 'data:image/PNG;base64,' . base64_encode($contents);
echo "<img src=$base64 />" ;