大约有 40,000 项符合查询结果（耗时：0.0203秒） [XML]
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...形中让Memcached成为故障的根源：
Memcached数据一致性的问题：当MySQL数据变化后，如果不能及时有效的清理掉过期的数据，就会造成数据不一致。这在强调即时性的Web2.0时代，不可取。
Memcached崩溃后的雪崩效应：作为缓存的Memc...
$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
...sible, that the request method is 'post' (lower- or even mixed case). Does PHP automatically sanitize this on GET and POST?
– Boldewyn
Mar 22 '10 at 13:24
...
PHP exec() vs system() vs passthru()
...
They have slightly different purposes.
exec() is for calling a system command, and perhaps dealing with the output yourself.
system() is for executing a system command and immediately displaying the output - presumably text.
passthru() is for executing a system command which...
从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...期和不靠谱的程序员之间的矛盾，我认为cr不是解决这个问题的银弹。不从实际情况出发光打正义的嘴炮实在太过于自慰了 。
我们可以看到，上面观点其实和Code Review没有太多关系，其实是在抱怨另外的问题。这些观点其实是...
Generating a drop down list of timezones with PHP
...generate your list.
$tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL);
Also, I would use PHP's names for the 'timezones' and forget about GMT offsets, which will change based on DST.
Code like that in phpbb is only that way b/c they are still supporting PHP4 and can't rely on the DateTim...
C语言面试那些事儿──一道指针与数组问题 - c++1y / stl - 清泛IT社区，为创新赋能！
...言指针较晦涩和难懂的地方。
理解了这两点的话，上述问题则十分简单：a + 1：现在把a看作一个指针，指针+1操作，根据C语言语义，实际增加偏移量的是指针指向类型的长度，即32位机器下的int型，即4字节，故a+1就是&a[1]，...
How to check whether an array is empty using PHP?
... is empty.
}
If you need to clean out empty values before checking (generally done to prevent explodeing weird strings):
foreach ($playerlist as $key => $value) {
if (empty($value)) {
unset($playerlist[$key]);
}
}
if (empty($playerlist)) {
//empty array
}
...
Do I have to guard against SQL injection if I used a dropdown?
... make sure the posted size is what you expect.
$possibleOptions = array('All', 'Large', 'Medium', 'Small');
if(in_array($_POST['size'], $possibleOptions)) {
// Expected
} else {
// Not Expected
}
Then use mysqli_* if you are using a version of php >= 5.3.0 which you should be, to sav...
闲扯Nginx的accept_mutex配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...新连接，其它的Worker会重新进入休眠状态，这就是「惊群问题」。
Nginx缺省激活了accept_mutex，也就是说不会有惊群问题，但真的有那么严重么？实际上Nginx作者Igor Sysoev曾经给过相关的解释：
OS may wake all processes waiting on accept(...
MySQL ('root'@'%') does not exist 的问题 - 爬虫/数据库 - 清泛IT社区，为创新赋能！
MySQL ('root'@'%') does not exist的问题：
在使用mysql时出现问题： The user specified as a definer ('root'@'%') does not exist。
一般是由于root用户对全局host无访问权限。因此只要给root用户添加一个访问权限即可。
解决办法：
登陆mysql ，...