A few years ago I installed Apache 2.2x and PHP 5.3.1 on a Linux server I maintain. I used .tar.gz's and built them as instructed (instead of rpms and what-have-you). And all was fine. Today I need to install this which seems like a PHP library. I went through all the steps up to make install, and I find ibm_db2.so in $PHP_HOME/lib/extensions/somecomplicatedname/ibm_db2.so The great ca
几年前，我在我维护的Linux服务器上安装了Apache 2.2x和PHP 5.3.1。 我使用.tar.gz，并按照指示构建它们（而不是rpms和what-have-you）。 一切都很好。 今天我需要安装这看起来像一个PHP库。 我完成了所有安装步骤，并在$PHP_HOME/lib/extensions/somecomplicatedname/ibm_db2.so ibm_db2.so中找到了$PHP_HOME/lib/extensions/somecomplicatedname/ibm_db2.so 最大的困难是最后一步是配置php.ini，但我的系统中没有php.in
I need to store a multi-dimensional associative array of data in a flat file for caching purposes. I might occasionally come across the need to convert it to JSON for use in my web app but the vast majority of the time I will be using the array directly in PHP. Would it be more efficient to store the array as JSON or as a PHP serialized array in this text file? I've looked around and it s
为了缓存目的，我需要在平面文件中存储多维关联数据数组。 我可能偶尔会遇到需要将其转换为JSON以用于我的Web应用程序，但绝大多数时间我将直接在PHP中使用该数组。 将数组作为JSON或PHP序列化数组存储在此文本文件中效率更高吗？ 我环顾四周，似乎在最新版本的PHP（5.3）中， json_decode实际上比反unserialize更快。 我目前倾向于将数组存储为JSON，因为如果有必要，我觉得它更容易被人读取，它可以用很少的努力在PHP和J
I understand that bitwise operations are necessary for much low-level programming, such as writing device drivers, low-level graphics, communications protocol packet assembly and decoding. I have been doing PHP for several years now, and I have seen bitwise operations very rarely in PHP projects. Can you give me examples of usage? You could use it for bitmasks to encode combinations of thing
我明白，对于许多低级编程（比如编写设备驱动程序，低级图形，通信协议数据包组装和解码），按位操作是必需的。 我已经做了好几年PHP，并且在PHP项目中很少看到按位操作。 你能给我一些用法的例子吗？ 您可以将它用于位掩码来对事物的组合进行编码。 基本上，它通过赋予每个位的含义来工作，所以如果你有00000000 ，每个位代表一些东西，除了是一个单一的十进制数。 假设我对要存储的用户有一些偏好，但我的数据库在存储
Possible Duplicate: Reference assignment operator in php =& What does the =& assignment operator mean in PHP? I could not find any reference in PHP Manual in assignment section. I saw it in a class instantiation, so I quite don't understand what's the difference between =& and solely =. It means reference assignment. There are two differences between = and =& .
可能重复： 参考赋值运算符在php =＆ 在PHP中，=＆赋值运算符是什么意思？ 我在“PHP手册”的作业部分找不到任何参考。 我在一个类实例中看到它，所以我完全不明白=＆和=是的区别。 它意味着参考分配。 =和=&之间有两个区别。 首先=不创建参考集： $a = 1; $b = $a; $a = 5; //$b is still 1 另一方面， =&运算符确实创建了参考集： $a = 1; $b = &$a; $a = 5; //$b is also 5 其次， =改变参考集中
What is the difference between PHP's print and echo ? Stack Overflow has many questions asking about PHP's print and echo keyword usage. The purpose of this post is to provide a canonical reference question and answer about PHP's print and echo keywords and compare their differences and use-cases. Why two constructs? The truth about print and echo is that while they appear to
PHP的print和echo什么区别？ Stack Overflow有许多关于PHP的print和echo关键字用法的问题。 这篇文章的目的是提供关于PHP的print和echo关键字的规范参考问题和答案，并比较它们的差异和用例。 为什么两个结构？ 关于print和echo的真相是，虽然它们对用户来说是两种截然不同的结构，但如果您深入到基础知识（即查看内部源代码），它们都是真正的回声阴影。 该源代码涉及解析器以及操作码处理程序。 考虑一个简单的操作
I know that there are lists of country names in various languages available separately, but I would like to have a list of countries where each country is named how the inhabitants of the country call it. I mean the list like: United States of America Россия Deutschland I think it would be convenient for website visitors to choose the country name which they know well and also I won't have
我知道有各种语言的国名可以单独列出，但是我想列出一个国家名单，每个国家的名称都是国家的居民如何称呼它的。 我的意思是像这样的列表： United States of America Россия Deutschland 我认为网站访问者可以方便地选择他们熟悉的国家名称，而且我也不必为服务器上的每种语言存储单独的国家/地区列表 - 我总是可以只显示该通用列表。 互联网上有这样的清单吗？ 或者，也许我可以以某种方式从PHP中获得它？ 看看维基百科
i have this PHP script: $q = mysql_query("SELECT `token` FROM `tokens`"); $ctx = stream_context_create(); stream_context_set_option($ctx, 'ssl', 'local_cert', 'apns.pem'); $fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx); while($token = mysql_fetch_array($q)) { $deviceToken = $token[0]; ech
我有这个PHP脚本： $q = mysql_query("SELECT `token` FROM `tokens`"); $ctx = stream_context_create(); stream_context_set_option($ctx, 'ssl', 'local_cert', 'apns.pem'); $fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx); while($token = mysql_fetch_array($q)) { $deviceToken = $token[0]; echo $dev
This is related to question: How does the "&" operator work in a PHP function? Is there simple code to show the difference between passing the object as reference vs passing the object's reference as value? You can pass a variable to a function by reference. This function will be able to modify the original variable. You can define the passage by reference in the fu
这与问题有关：“＆”运算符如何在PHP函数中工作？ 是否有简单的代码来显示之间的差异 传递该对象作为参考 VS 将对象的引用作为值传递？ 您可以通过引用将变量传递给函数。 该功能将能够修改原始变量。 您可以在函数定义中通过引用来定义段落： <?php function changeValue(&$var) { $var++; } $result=5; changeValue($result); echo $result; // $result is 6 here ?> <?php class X { var
Possible Duplicate: where we use object operator “->” in php Reference - What does this symbol mean in PHP? I see these in PHP all the time but I don't have a clue as to what they actually mean. What does -> do and what does => do. And I'm not talking about the operators. They're something else, but nobody seems to know... The double arrow operator , => , is use
可能重复： 我们在php中使用对象运算符“ - >” 参考 - 这个符号在PHP中的含义是什么？ 我始终在PHP中看到这些内容，但我不知道它们实际上的含义。 什么做->做和做什么=>做。 我不是在谈论运营商。 他们是别的东西，但似乎没有人知道...... 双箭头运算符 =>用作数组的访问机制。 这意味着它左侧的内容将在数组上下文中具有与它右侧相对应的值。 这可用于将任何可接受类型的值设置为数组的相应索引。 索
I have tried reading some articles, but I am not very clear on the concepts yet. Would someone like to take a shot at explaining to me what these technologies are: Long Polling Server-Sent Events Websockets Comet One thing that I came across every time was, the server keeps a connection open and pushes data to the client. How is the connection kept open, and how does the client get t
我尝试阅读一些文章，但我对这些概念还不是很清楚。 会有人喜欢向我解释这些技术是什么： 长轮询 服务器发送的事件 的WebSockets 彗星 我每次遇到的一件事情是，服务器保持连接打开并将数据推送到客户端。 连接如何保持开放，客户如何获得推送的数据？ （客户如何使用这些数据，也许有些代码可能有帮助？） 现在，他们中的哪一个应该用于实时应用。 我一直听到很多关于websockets（使用socket.io [一个node.js