在变量部分中定义全局变量。
The variable section is where most globally defined variables are defined.
指定脚本的运行环境。每种环境都有一组特定的预定义全局变量。
Environments - which environments your script is designed to run in. Each environment brings with it a certain set of predefined global variables.
在代码部分，定义了一个函数地址，方法同上述定义全局变量的相同——只需在它们的名称之后跟上一个冒号。
In the code section, you define a function's address the same way you defined addresses for global variables above — just put their name followed by a colon.
它包含全局变量和函数的定义。
This includes the definition of global variables and functions.
创建全局变量之后，将其定义保存在编目中，并且任何会话都可以使用它们。
Once global variables are created, their definition is stored in the catalogs and any session can use them.
此外，您不能更改全局变量定义，包括其默认值。
Furthermore, you cannot ALTER the global variable definition at all, including its default value.
对于主屏幕而言，应定义它的屏幕转换方法，并设置全局变量，以表明这个屏幕既非CICS，也非tso屏幕。
For the main screen, define how to transform that screen and set the global variable to indicate that the screen is neither a CICS nor TSO screen.
如果您不希望再保存全局变量的定义，则需要删除它。
When you no longer want the definition of the global variable to exist, you need to drop it.
编目中保存的是全局变量的定义而非实际的值，了解这一点非常重要。
It is important to understand that only the definition of the global variable is stored in the catalogs and not the actual values.
让我们了解一些与错误相关的其他全局变量，以及由POSIX- 1003.1errno值定义的标准。
Let's take a look at some additional error-related global variables and the standard defined by POSIX-1003.1 errno values.
在样式表或其他位置定义的全局变量或参数。
A global variable or parameter, defined once in the stylesheet and available everywhere.
这可以是schema元素、Web服务适配器或其他数据存储定义，不过也可以是全局变量。
This can be a schema element, a Web service adapter, or some other data store definition, but it can also be a global variable.
函数可在另一个函数内定义，还可赋给全局变量或作为结果返回。
Functions can be defined within another function and assigned to global variables or returned as results.
这条规则同样适用于全局变量的定义——与全局变量相关的权限也在系统编目中进行了定义。
This rule also applies to their definition — privileges associated with a global variable are also defined within the system catalog.
这意味着，在SQL路径中，只有在最后一次显式绑定时间戳之前定义的全局变量才会进行名称解析。
This means that only global variables in the SQL path that were defined before the last explicit bind time stamp are considered for global variable name resolution.
一个扩展可以定义标签、过滤器、测试、操作、全局变量、函数和节点访问等。
An extension can define tags, filters, tests, operators, global variables, functions, and node visitors.
exists函数确定是否定义了一个具有由字符串定义的名称的变量(在本例中为全局变量g： syntax_on)。
The exists function determines whether a variable with the name specified by the string (in this case, the global variable g: syntax_on) has been defined.
全局变量：函数外定义的变量。全局变量能被所有函数来读取使用。
A variable defined outside a function. Global variables can be accessed from any function.
在函数内定义一个与函数可能会用到的全局变量同名的局部变量总是不好的。
It is almost always a bad idea to define a local variable with the same name as a global variable that the function USES or might use.
为了完成这些我们需要向脚本系统中添加预定义的全局变量。
To accomplish this we can add predefined global variables to our scripting system.
仅定义一个局部变量而没在函数中调用它，同样会减慢速度(其程度相当于递增一个局部变量)。PHP大概会检查看是否存在全局变量。
Just declaring a global variable without using it in a function also slows things down (by about the same amount as incrementing a local var). PHP probably does a check to see if the global exists.
如果在函数或类定义之外声明变量或常数，则是全局变量，它的值可在整个程序中访问和修改。
If you declare a variable or constant outside a function or class definition, it is a global variable, and its value is accessible and modifiable throughout your program.
返回此命名空间中定义的所有全局变量。
Returns all variables defined at global scope within this namespace.
返回此命名空间中定义的所有全局变量。
Returns all variables defined at global scope within this namespace.
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