我想在用户点击按钮(#myid.save)时上传图片.Below是我的代码:
HTML代码:
<canvas id="cnv" width="500" height="100"></canvas>
<input id="myid_save" type="submit">Save</input>
JavaScript代码:
$('#myid_save').on('click', function(e) {
e.preventDefault();
saveViaAJAX();
});
function saveViaAJAX()
{
var testCanvas = document.getElementById("cnv");
var canvasData = testCanvas.toDataURL("image/png");
//var postData = "canvasData="+canvasData;
$.ajax({
type: "POST",
url: "testSave.php",
data: {
imgBase64: canvasData
}
}).done(function(o) {
console.log('saved');
});
}
testSave.php文件:
<?php
define('UPLOAD_DIR', 'C:\xampp\htdocs\drupal-7.34\sites\all\modules\myid\uploads\id_signature');
$img = $_POST['imgBase64'];
$img = str_replace('data:image/png;base64,', '', $img);
$img = str_replace(' ', '+', $img);
$data = base64_decode($img);
$file = UPLOAD_DIR . '\sample.png';
$success = file_put_contents($file, $data);
print $success ? $file : 'Unable to save the file.';
?>
我的控制台说“已保存”,但我的服务器中没有保存图像。我在哪里错过了?
答案 0 :(得分:0)
testSave.php
引用$_POST['canvasData']
,但JS将目标变量发送为imgBase64。该行应改为读取$img = $_POST['imgBase64']
以匹配AJAX。