strncasecmp Definition and Usage
界说和用法
The strncasecmp() function compares two strings.
strncasecmp()函数的感化是:对照字符串的前n个字符(巨细写不敏感)。
This function returns:
这个函数将前往以下值:
0 - if the two strings are equal
0 C 假如字符串相等
<0 - if string1 is less than string2
<0 C 假如string1小于string2
>0 - if string1 is greater than string2
>0 C 假如string1大于string2
Syntax
语法
strncasecmp(string1,string2,length)
Parameter参数 Description描写 string1 Required. Specifies the first string to compare
需要参数。指定介入对照的第一个字符串对象 string2 Required. Specifies the second string to compare
需要参数。指定介入对照的第二个字符串对象 length Required. Specify the number of characters from each string to be used in the comparison
需要参数。指定每一个字符串中参数对照的字符数目Tips and Notes
注重点
Note: The strncasecmp() is binary safe and case-insensitive.
注重:strncasecmp()函数是二进制准确的,而且它不辨别字母巨细写。
Example
案例 复制代码 代码以下:
<?php
echo strncasecmp("Hello world!","hello earth!",6);
?>