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Checking if array is multidimensional or not?
... least the implicit loop is better than the straight for()):
$ more multi.php
<?php
$a = array(1 => 'a',2 => 'b',3 => array(1,2,3));
$b = array(1 => 'a',2 => 'b');
$c = array(1 => 'a',2 => 'b','foo' => array(1,array(2)));
function is_multi($a) {
$rv = array_filter($...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...定的局部性的特征，利用局部性的原理将海量数据计算的问题分而治之。
MR模型是无共享的架构，数据集分布至各个节点。处理时，每个节点就近读取本地存储的数据处理(map)，将处理后的数据进行合并(combine)、排序(shuffle and so...
How does the SQL injection from the “Bobby Tables” XKCD comic work?
...nowing the password. So you don't need to be able to use two statements in order to use SQL injection, although you can do more destructive things if you are able to supply multiple statements.
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How can I get the current page name in WordPress?
What PHP code can be used to retrieve the current page name in a WordPress theme?
19 Answers
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BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
...与前面几代不同的是，蓝牙4.0版引入的BLE协议更注重功耗问题，而非通信速率的提升。这也使得低功耗蓝牙更加节能，能使设备的电池维持很长时间，因此在很多可穿戴设备中得到了应用。
0x2 BLE工作流程0x21 工作过程蓝牙适用...
Why can't I access DateTime->date in PHP's DateTime class?
...ilable is actually a side-effect of support for var_dump() here – derick@php.net
For some reason, you're not supposed to be able to access the property but var_dump shows it anyways. If you really want to get the date in that format, use the DateTime::format() function.
echo $mydate->format(...
How do I remove all specific characters at the end of a string in PHP?
...
$output = rtrim($string, '.');
(Reference: rtrim on PHP.net)
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How to exit in Node.js
...hink of Node as the server itself. It isn't just fired up as needed, like PHP is within a web server like Apache. Node doesn't even have to have anything to do with web servers at all! It's just a host for some JavaScript, with some nifty built-in libraries for doing useful things.
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Creating PHP class instance with a string
...\Bar\MyClass';
$instance = new $class();
Other cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$meth...
C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
C语言面试那些事儿──一道指针与数组问题首先看如下代码：int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
...