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Nested or Inner Class in PHP

...There are several compelling reasons for using them: It is a way of logically grouping classes that are only used in one place. If a class is useful to only one other class, then it is logical to relate and embed it in that class and keep the two together. It increases encapsulation. ...
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Get the current script file name

If I have PHP script, how can I get the filename from inside that script? 16 Answers 1...
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Installing PDO driver on MySQL Linux server

... On Ubuntu you should be able to install the necessary PDO parts from apt using sudo apt-get install php5-mysql There is no limitation between using PDO and mysql_ simultaneously. You will however need to create two connections to your DB, one with mysql_ and o...
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How to enable cURL in PHP / XAMPP

... On Debian with Apache 2: apt-get install php5-curl /etc/init.d/apache2 restart (php4-curl if it's php4) share | improve this answer | ...
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PHP script - detect whether running under linux or Windows?

...TH_SEPARATOR>":" returns true for Windows too (PATH_SEPARATOR is ":" on all other OSs). – Titus Jan 8 '17 at 12:45 ...
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PDO Prepared Inserts multiple rows in single query

... table (fielda, fieldb, ... ) values (?,?...), (?,?...).... That is basically how we want the insert statement to look like. Now, the code: function placeholders($text, $count=0, $separator=","){ $result = array(); if($count > 0){ for($x=0; $x<$count; $x++){ $re...
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What's the difference between :: (double colon) and -> (arrow) in PHP?

... used to access static members, such usage is discouraged), while :: is usually used to access static members (though in a few special cases, it's used to access instance members). In general, :: is used for scope resolution, and it may have either a class name, parent, self, or (in PHP 5.3) static...
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Create a CSV File for a user in PHP

...ord2,record3\n"; die; etc Edit: Here's a snippet of code I use to optionally encode CSV fields: function maybeEncodeCSVField($string) { if(strpos($string, ',') !== false || strpos($string, '"') !== false || strpos($string, "\n") !== false) { $string = '"' . str_replace('"', '""', $st...
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Convert SVG image to PNG with PHP

I'm working on a web project that involves a dynamically generated map of the US coloring different states based on a set of data. ...
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...经常死机,登陆到终端看了一下,都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉,还有位客户抱怨 VPS 经常死机,登陆到终端看了一下,都是常见的 Out of memory 问...