Ich habe Probleme, ein SignaturePad-Bild korrekt auf meinem Server zu speichern. Die URI geht korrekt von Javascript zu PHP über, da ich die URI selbst in HTML rendern kann. Allerdings kann ich das Bild nicht anzeigen, wenn ich es als PNG-Datei exportieren möchte. Ich habe ein Beispiel-URI unten gepostet. Wenn Sie es in Ihren Browser einfügen, wird es korrekt dargestellt. Es wird jedoch nicht korrekt als PNG-Datei gespeichert. Es ist schwarz und sollte nicht sein. Ich habe versucht, verschiedene andere uri's aus anderen Quellen (nicht SignaturePad) zu exportieren und sie werden korrekt in PNG gespeichert. Außerdem ist der Hintergrund im Signaturpad auf Weiß eingestellt, was nicht das Problem sein sollte.Bild von SignaturePad ohne transparenten Hintergrund exportieren
Uri does not render correctly as png: 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
PHP-Code
$data_uri=$data['image'];//Replace this with the uri's above for testing.
$encoded_image = explode(",", $data_uri)[1];
$encoded_image= str_replace(' ','+',$encoded_image);
$decoded_image = base64_decode($encoded_image);
/*Save the signature image to a file*/
$fileType='png';
$uploadDir = getcwd() . '/uploads/';
$uniqueIDX=uniqid();
$fileName= $uniqueIDX . '.png';
$fileDirectory = $uploadDir . $fileName;
file_put_contents($fileDirectory, $decoded_image);
Jede Hilfe sehr geschätzt werden würde. Lassen Sie es mich wissen, wenn Sie mehr Informationen benötigen.
Wie groß ist die Größe der erstellten PNG-Datei? Und haben Sie die erstellte PNG-Datei mit einem Texteditor oder Hex-Editor untersucht? Wie sieht es aus? – NineBerry
PNG-Datei ist 11 KB. So sehen die ersten Zeilen der Datei in Notepad ++ aus; ‰ PNG IHDR Q f • ÿ IDATx^^ iyo wZðL ¥ A0Ag1Af '! * Ê4ÙH \t íÆÍHŠbÆ® „Dü \t ILU“ BêÆw2ÉBi »tÎFaÚi‚Ä ... ãbÚTp – user1848023
Wenn meine Antwort hilfreich war, fügen Sie es als richtig markieren antworten Sie, indem Sie auf das Häkchen daneben klicken. Vielen Dank. – NineBerry