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
代码如下:
strnatcmp(string1,string2)
Parameter参数 | Description描述 |
---|---|
string1 | required. Specifies the first string to compare 必要参数。指定参与比较的第一个字符串对象 |
string2 | required. Specifies the second string to compare 必要参数。指定参数比较的第二个字符串对象 |
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
代码如下:
PHPecho strnatcmp("2Hello world!","10Hello world!");echo "
";echo strnatcmp("10Hello world!","2Hello world!");?>
";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