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How to save an HTML5 Canvas as an image on a server?
... server via Ajax
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}
}).done(function(o) {
console.log('saved');
// If you want the file to be visible in the browser
// - please modify the callback in javascript. ...
How to prevent form resubmission when page is refreshed (F5 / CTRL+R)
...;
Proof of concept here: https://dtbaker.net/files/prevent-post-resubmit.php
I would still recommend a Post/Redirect/Get approach, but this is a novel JS solution.
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In PHP, can you instantiate an object and call a method on the same line?
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The feature you have asked for is available from PHP 5.4. Here is the list of new features in PHP 5.4:
http://php.net/manual/en/migration54.new-features.php
And the relevant part from the new features list:
Class member access on instantiation has been added, e.g. (ne...
Illegal string offset Warning PHP
I get a strange PHP error after updating my php version to 5.4.0-3.
16 Answers
16
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PHP - Debugging Curl
...PT_STDERR.
curl_setopt($handle, CURLOPT_VERBOSE, true);
$verbose = fopen('php://temp', 'w+');
curl_setopt($handle, CURLOPT_STDERR, $verbose);
You can then read it after curl has done the request:
$result = curl_exec($handle);
if ($result === FALSE) {
printf("cUrl error (#%d): %s<br>\n"...
PHP PDO returning single row
...together. LIMIT has the effect that the database returns only one entry so PHP has to handle very less data. With fetch you get the first (and only) result entry from the database reponse.
You can do more optimizing by setting the fetching type, see http://www.php.net/manual/de/pdostatement.fetch.p...
Weird PHP error: 'Can't use function return value in write context'
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I realize I'm super late to this, but it's also PHP version dependent, right? I'm pretty sure that's legal in later PHP versions like 5.6, but I think it doesn't in 5.3
– UnsettlingTrend
Dec 8 '16 at 16:14
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tcp加速技术解决方案 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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内核态到用户态的数据拷贝
中断处理
还有诸如不容易调试， 代码比较复杂等等都会增加开发和维护难度。
使用DPDK
DPDK是intel推出的快速的数据包处理框架
通过内核uio机制，使数据包直接dma发送到用户态内存中
因为不...
PHP: If internet explorer 6, 7, 8 , or 9
I want to do a conditional in PHP for the different versions of Internet Explorer along the lines of:
17 Answers
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What's better to use in PHP, $array[] = $value or array_push($array, $value)?
What's better to use in PHP for appending an array member,
10 Answers
10
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