One nice feature of PHP is variable variables.
PHP的一个优秀特性是可变变量。
Variables are always assigned by value, which means that when one variable is set equal to another variable, they are then independent of each other.
变量始终是由值指定的，这意味着设置一个变量等于另一个变量后，它们就相互独立。
You can redefine the variables in your object just like any other variable.
您可以在对象内像定义其他任何变量一样重新定义这些变量。
An assign activity lets you copy values from one variable to another or to initialize variables.
赋值活动允许您将值从一个变量复制到另一个变量或复制到初始化变量。
The variable is added to the variables list.
这个变量会添加到变量列表中。
One of these environment variables is named WSTK_CP; this environment variable contains the classpath that is required to compile and run the publish applications.
这些环境变量中的一个名为wstk_cp；这个环境变量包含编译和运行发布应用程序所需要的类路径。
The variable does not participate in invariants with other variables.
该变量没有包含在具有其他变量的不变式中。
Set the variable scope to limit variables to live only within a "session".
还要设置变量作用域，以限制变量只在某个“会话”中活动。
Unlike bind variables, a substitution variable is processed on the client side, and its value will be substituted before submitting the command for execution.
不同于绑定变量，替代变量在客户端加以处理，且其值会在提交执行命令之前被替换。
Without local variables, all event handler instances would work on the same global variable instances.
如果没有局部变量，所有事件处理程序实例都将在相同的全局变量实例上工作。
This provider now supports host variables, modules, the ARRAY data type, compound statements, and variable length timestamps.
目前这个提供程序支持主机变量、模块、ARRAY数据类型、复合语句和可变长度时间戳。
Always initialize your variables. PHP will automatically create a variable if it hasn't been initialized, but it's not good practice to rely on this feature.
当需要没有初始化的变量，PHP解释器会自动创建一个变量，但依靠这个特性来编程并不是一个好主意。
Figure 10 shows an example of local variable use, where test variables are initialized by using values from a data pool (login credentials).
图10显示了本地变量使用的范例，这里测试变量会使用来自数据汇(登录权限)的值来得到初始化。
First, use the variable activity to define a couple of variables.
首先，使用变量活动来定义两个变量。
Variable values can also be changed in the view, and if you edit a variable from the variables view, the new value assigned becomes effective immediately.
变量值也可以在视图中得到更改，而且如果您从变量视图中更改了一个变量的话，那么分配的新值就会变得立即变得十分有效率了。
The variable section is where most globally defined variables are defined.
在变量部分中定义全局变量。
You should now see a string variable called DB2UserId added in the Application Variables list.
现在，您将看到名为db2userid的变量已被添加到ApplicationVariables列表中。
Drag the shippingComplete variable from the Variables section of the visual snippet editor to the canvas.
将 shippingComplete变量从可视代码片段编辑器的Variables部分拖到画布。
Place these list variables using %{<list-variable>}.
使用 %{
And it's because this variable here is not the same as the variables on which we are integrating.
因为这个变量，和积分的变量不一样。
But, with use variables, the closure essentially remembers the context of the variable.
但是，通过使用变量，closure基本上记住了变量的上下文。
If you look in the Variables view, you see the string variable s, which is equal to null.
如果查看Variables视图中的字符串变量s，会发现它等于null。
Variable view: This view displays the values of the variables in the selected component.
VariableView：此视图显示选定组件中的变量的值。
Because Ruby does not require instance variable declaration, the simplest way to model instance variables is with a hash.
由于Ruby并不需要声明实例变量，因此建模实例变量最简单的方式就是使用散列。
For example, if you have a complicated if statement, some branches may modify one variable while others modify other variables.
例如，如果您拥有一个复杂的if语句，有些分支可能会修改某个变量，而其他分支可能会修改其他变量。
Outjected variables are placed directly into the variable context, independent of their backing bean.
提取的变量直接放到该变量上下文中，不受其支持bean 的约束。
You can explicitly forget the bounding of a variable using f(Varname), or all variables using f().
可以使用f(Varname)显式地忽略一个变量的绑定，或使用 f() 忽略所有变量的绑定。
The number of multi-value context variables is restricted to one variable per <sur:user .../> element.
多值上下文变量的数量仅限于每个 <sur:user .../>元素一个变量。
The number of multi-value context variables is restricted to one variable per <sur:user .../> element.
多值上下文变量的数量仅限于每个 <sur:user .../>元素一个变量。
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