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怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
怎么往SetTimer的回调函数传递参数本文说明两个问题：1.windows的消息处理机制；2.怎么往SetTimer的回调函数传递参数。首先看第一个问题，我们都知道 windows是消 息驱动的...本文说明两个问题：1.windows的消息处理机制；2.怎么往SetT...
select count(*) from table of mysql in php
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You need to alias the aggregate using the as keyword in order to call it from mysql_fetch_assoc
$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];
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In php, is 0 treated as empty?
...aning of without value. Like the others said you'll have to use isset() in order to check if a variable has been defined, which is what you do.
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Calling a function within a Class method?
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In order to have a "function within a function", if I understand what you're asking, you need PHP 5.3, where you can take advantage of the new Closure feature.
So you could have:
public function newTest() {
$bigTest = funct...
Are PDO prepared statements sufficient to prevent SQL injection?
...statements / parameterized queries are generally sufficient to prevent 1st order injection on that statement*. If you use un-checked dynamic sql anywhere else in your application you are still vulnerable to 2nd order injection.
2nd order injection means data has been cycled through the database on...
PHP 5.4 Call-time pass-by-reference - Easy fix available?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Are global variables in PHP considered bad practice? If so, why?
...se that global variable, and not only that, you have to figure out in what order those references to the global variable are accessed.
If you have a global variable in a piece of code it makes it difficult to isolate the functionality of that code. Why would you want to isolate functionality? So yo...
How to prevent robots from automatically filling up a form?
...n old solution for webmasters including tons of non pertinent key words in order to boost their webranking. I think search crawler bots such google ones can figure it's display:none. Why would other bots not able to do that ?
– snowflake
Mar 8 '10 at 10:34
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Mapping over values in a python dictionary
... and remind myself that yes, keys and values are iterated over in the same order if the dict doesn't change. I don't have to think at all about what the dictcomp is doing, and so it's the right answer.
– DSM
Sep 1 '12 at 15:39
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Traits vs. interfaces
...a base class is overridden by a member inserted by a Trait. The precedence order is that members from the current class override Trait methods, which in return override inherited methods.
So - consider the following scenario:
class BaseClass {
function SomeMethod() { /* Do stuff here */ }
}
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