Definition and Usage
定义和用法
The strnatcmp() function compares two strings using a "natural" algorithm.
strnatcmp()函数的作用是：用自然运算法则比较字符串（大小写敏感）。
In a natural algorithm, the number 2 is less than the number 10. In computer sorting, 10 is less than 2, because the first number in "10" is less than 2.
在“自然运算法则”中，2比10小。在计算机序列当中，10比2小，因为“10”中的第一个数字是“1”，它小于2。
This function returns:
这个函数将返回下列值：
•0 - if the two strings are equal
0 – 如果字符串相等
•<0 - if string1 is less than string2
<0 – 如果string1小于string2
•>0 - if string1 is greater than string2
>0 – 如果string1大于string2
Syntax
语法
strnatcmp(string1,string2)
|
Parameter参数 |
Description描述 |
|---|---|
|
string1 |
Required. Specifies the first string to compare |
|
string2 |
Required. Specifies the second string to compare |
Tips and Notes
注意点
Note: The strnatcmp() is case-sensitive.
注意：strnatcmp()函数是区分大小写的。
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Example
案例
<?phpecho strnatcmp("2Hello world!","10Hello world!");echo "<br />";echo strnatcmp("10Hello world!","2Hello world!");?>
The output of the code above will be:
上述代码将输出下面的结果：-1 1
