But because it lacks a var declaration, it's a global variable.
但它缺少var声明，这是个全局变量。
Incrementing a global variable is 2 times slow than a local var.
递增一个全局变量要比递增一个局部变量慢2倍。
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).
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)。
Storing references to global variables inside a function is a problem, as a global var inside a function seems to be nothing but a local var containing a reference to the global.
保存引用一个全局变量在函数里面是一个问题，因为一个函数变量在函数看不见但是一个局域变量包含一个引用全局。
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.
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.
在一个函数里如果只声明一个全局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很有可能会检查看是否存在全局变量。
You use the function keyword to denote the start of a function and the var keyword to declare local (as opposed to global) variables, but you do not include the type of the variable being declared.
您可以使用function关键字开始函数的声明，使用var关键字来声明局部变量(这与全局变量不同)，但是不用包括正在声明的变量的类型。
This paper evaluates how global factors have affected the inflation dynamics of China since 1996 with analysis tools as time serial regression and VAR model.
本文利用时间序列回归、VAR模型等分析方法，考察了1996年以来国际因素对中国通胀机制的影响。
This paper evaluates how global factors have affected the inflation dynamics of China since 1996 with analysis tools as time serial regression and VAR model.
本文利用时间序列回归、VAR模型等分析方法，考察了1996年以来国际因素对中国通胀机制的影响。
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