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jQuery UI Sortable, then write order into a database
...Ted array and update the elements' positions accordingly.
For example, in PHP:
$i = 0;
foreach ($_POST['item'] as $value) {
// Execute statement:
// UPDATE [Table] SET [Position] = $i WHERE [EntityId] = $value
$i++;
}
Example on jsFiddle.
...
Laravel migration: unique key is too long, even if specified
...tions guide to fix this all you have to do is edit your AppServiceProvider.php file and inside the boot method set a default string length:
use Illuminate\Database\Schema\Builder;
public function boot()
{
Builder::defaultStringLength(191);
}
...
Unexpected results when working with very big integers on interpreted languages
...et the sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
36 Answers
...
Anonymous recursive PHP functions
Is it possible to have a PHP function that is both recursive and anonymous? This is my attempt to get it to work, but it doesn't pass in the function name.
...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...机A ，B有两个可用路由要实现主备切换，当主防火墙出现问题的时候，可以自动切换到备防火墙上。第一台设备 ASG 425 支持OSPF...拓扑如下
主机A ，B有两个可用路由要实现主备切换，当主防火墙出现问题的时候，可以自动切换...
In where shall I use isset() and !empty()
...riables and not just values, so isset("foobar") will raise an error. As of PHP 5.5, empty supports both variables and expressions.
So your first question should rather be if isset returns true for a variable that holds an empty string. And the answer is:
$var = "";
var_dump(isset($var));
The typ...
Get current domain
...ometimes forget which one to use myself - I think this can be nifty.
<?php
// Change banana.com to the domain you were looking for..
$wordToHighlight = "banana.com";
$serverVarHighlighted = str_replace( $wordToHighlight, '<span style=\'background-color:#883399; color: #FFFFFF;\'&g...
MySQL vs MongoDB 1000 reads
...
man,,, the answer is that you're basically testing PHP and not a database.
don't bother iterating the results, whether commenting out the print or not. there's a chunk of time.
foreach ($cursor as $obj)
{
//echo $obj["thread_title"] . "<br><Br>";
...
deque iterator not dereferencable 问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
deque iterator not dereferencable 问题STL里面出现这个问题，纠结了半天，不知道什么原因。当然deque iterator not dereferencable。这个是deque出问题，vector、list也可以出...STL里面出现这个问题，纠结了半天，不知道什么原因。
当然deque iterat...
怎么解决MQTT连接掉线，自动连接问题，同时解决，反复断开连接，断开连接问...
解决MQTT退出后台后掉线自动连接问题，现在可以实现自动连接，但是在返回控制界面的时候，反复断开反复链接，还有切换页面的时候返回也是同样的问题，还有连接一个服务器，需要每个页面单独设置MQTT连接吗，是不是可以...