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? ??? ?? PHP ???? HTML5 Canvas ???? ??? ??? ??? ? ????

HTML5 Canvas ???? ??? ??? ??? ? ????

Dec 26, 2024 pm 01:18 PM

How Can I Save an HTML5 Canvas Image to a Server?

HTML5 ???? ??? ???? ??

?? ??? ??? ????? ??? ? ???? ?? ???? ???? ??? ?? ??????. ??? HTML5 Canvas? ??? ???? ???? ??? ??????.

1. HTML5 ??? ???

JavaScript? Canvas API? ???? ???? ???? ????. ?:

var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
// ... Draw shapes or objects on the canvas here

2. ???? ??? ???? ??

???? ??? ??? ???? ????? toDataURL() ???? ?????. ? ???? Base64? ??????.

var canvasData = canvas.toDataURL("image/png");

3. ??? ??? ??? ???

JavaScript? XMLHttpRequest ??? ???? ??? ???? ??? ??? AJAX ??? ?????. HTTP ?? ??? POST? ???? Content-Type ??? "application/x-www-form-urlencoded"? ?????.

var ajax = new XMLHttpRequest();
ajax.open("POST", "testSave.php", false);
ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
ajax.send("imgData=" + canvasData);

4. ???? ??? ??? ??

???? ???? ??? ???? ????? ????(?: PHP)? ?????. Base64? ???? ???? ????? ??? ??? ?????.

$data = $_POST['imgData'];

// Decode the Base64-encoded image data
$unencodedData = base64_decode($data);

// Save the image file
$filePath = '/path/to/file.png';
$fp = fopen($filePath, 'wb');
fwrite($fp, $unencodedData);
fclose($fp);

5. ??? ?? ??

??? ???? ??? ???? ???? ??? ?? ???? ???? ???? ????? ?????? ??? ? ???, ???? ???? ??? ? ????.

? ??? HTML5 Canvas ???? ??? ??? ??? ? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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? ?? ??? ????? ???? ??? ??????, ???? ?????? ????. ? ???? ?? ???? ?? ??? ?? ????. ???? ??? ???? ???? ??? ?? admin@php.cn?? ?????.

? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

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???? ?? ?? ?? ???

SublimeText3 ??? ??

SublimeText3 ??? ??

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???? 13.0.1 ???

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??? PHP ?? ?? ??

???? CS6

???? CS6

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SublimeText3 Mac ??

SublimeText3 Mac ??

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