大约有 40,000 项符合查询结果(耗时:0.0391秒) [XML]

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mysqli or PDO - what are the pros and cons? [closed]

...nvincing somebody works better with a killer feature. So there it is: A really nice thing with PDO is you can fetch the data, injecting it automatically in an object. If you don't want to use an ORM (cause it's a just a quick script) but you do like object mapping, it's REALLY cool : class Student...
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Why, Fatal error: Class 'PHPUnit_Framework_TestCase' not found in …?

...g the most recent PHPUnit version on their PHP 7 builds. My fix was to manually download an old phar and use that instead. – DisgruntledGoat Mar 13 '17 at 17:12 2 ...
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CDN(内容分发网络)技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...务提供商这一角色。但是,IDC并不能解决内容的有效发布问题。内容位于网络的中心并不能解决骨干带宽的占用和建立IP网络上的流量秩序。因此将内容推到网络的边缘,为用户提供就近性的边缘服务,从而保证服务的质量和整...
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How do I deep copy a DateTime object?

...or now assume DateTime is returned from some opaque API that I can't just call over again. For example, I have a function that handles orders that returns a DateTime which is when the customer can next place an order. Calling the function to create a copy produces side effects I don't want. ...
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How can I capture the result of var_dump to a string?

... most likely have a negative effect on performance here. It also can get really messy if you need to look at multiple variables during the execution of a complex script. – selfawaresoup Dec 27 '09 at 16:45 ...
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Calling a function within a Class method?

...c function newTest(){ $this->bigTest(); $this->smallTest(); } private function bigTest(){ //Big Test Here } private function smallTest(){ //Small Test Here } public function scoreTest(){ //Scoring code here; ...
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Website screenshots

... Sure you can, but you'll need to render the page with something. If you really want to only use php, I suggest you HTMLTOPS, which renders the page and outputs it in a ps file (ghostscript), then, convert it in a .jpg, .png, .pdf.. can be little slower with complex pages (and don't support all the ...
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Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted

...h to find it, I'm afraid. The simplest instrument is to selectively place calls to memory_get_usage and narrow it down to where the code leaks. You can also use xdebug to create a trace of the code. Run the code with execution traces and show_mem_delta. ...
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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术

...EraseBkgnd浅析在使用VC进行绘图时,最郁闷的就是屏幕闪烁问题。有时只能使用双缓冲去解决,当然更多的时候是去忍受。有没有什么这种的方法?有,那就是重 在使用VC进行绘图时,最郁闷的就是屏幕闪烁问题。有时只能使用...
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大数据:用数据指导APP运营 - 资讯 - 清泛网 - 专注C/C++及内核技术

大数据:用数据指导APP运营数据问题一直是很多运营人员头疼的问题。之前的回答说了一些,但都没有展开说,我也不知道进阶篇能说到啥程度,但先说着吧。1 数据的定义...数据问题一直是很多运营人员头疼的问题。之前的回...