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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...
How to do a GitHub pull request
...y on Github's website.
$ git clone https://github.com/tim-peterson/dwolla-php.git
$ cd dwolla-php
$ git remote add upstream https://github.com/Dwolla/dwolla-php.git
$ git fetch upstream
// make your changes to this newly cloned, local repo
$ git add .
$ git commit -m '1st commit to dwolla'
$ git p...
How to save a PNG image server-side, from a base64 data string
...rings that this tool generates, into actual PNG files on the server, using PHP.
15 Answers
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What does $$ (dollar dollar or double dollar) mean in PHP?
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It's a variable's variable.
<?php
$a = 'hello';
$$a = 'world'; // now makes $hello a variable that holds 'world'
echo "$a ${$a}"; // "hello world"
echo "$a $hello"; // "hello world"
?>
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Best way to clear a PHP array's values
...o I wrote it that way because of the authors question "Best way to clear a PHP array's values". It sais 'clear', not 'new instance'. Using unset will clear $foo from the symbol table. I we are talking about very large tables I'd probably recommend $foo = null; unset($foo); since that also would clea...
Can the jQuery UI Datepicker be made to disable Saturdays and Sundays (and holidays)?
...{
'async': false,
'global': false,
'url': 'getdate.php',
'success': function (data) {
val = data;
}
});
return val;
})();
var natDays = holiDays.split('');
function nationalDays(date) {
var m = date.getMonth();
var d = date...
How do I remove  from the beginning of a file?
...S file that looks fine when I open it using gedit , but when it's read by PHP (to merge all the CSS files into one), this CSS has the following characters prepended to it: 
...
MySQL vs MongoDB 1000 reads
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man,,, the answer is that you're basically testing PHP and not a database.
don't bother iterating the results, whether commenting out the print or not. there's a chunk of time.
foreach ($cursor as $obj)
{
//echo $obj["thread_title"] . "<br><Br>";
...
Preserve Line Breaks From TextArea When Writing To MySQL
...
Two solutions for this:
PHP function nl2br():
e.g.,
echo nl2br("This\r\nis\n\ra\nstring\r");
// will output
This<br />
is<br />
a<br />
string<br />
Wrap the input in <pre></pre> tags.
See: W3C Wiki - HTML/El...
Any tools to generate an XSD schema from an XML instance document? [closed]
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Be aware this tool is written in php, so it's not trivial to setup.
– 79E09796
Mar 19 '12 at 9:55
5
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