PHP strcasecmp () function
Examples
Compares two strings (case insensitive):
<?php
echo strcasecmp("Hello world!","HELLO WORLD!");
?>
echo strcasecmp("Hello world!","HELLO WORLD!");
?>
Running instance »
Definition and Usage
strcasecmp () function compare two strings.
Tip: strcasecmp () function is binary safe and is not case sensitive.
Tip: This function strncasecmp () function is similar, the difference is that) you can specify the number of characters in each string for comparison by strncasecmp (.
grammar
strcasecmp( string1,string2 )
| 参数 | 描述 |
|---|---|
| string1 | 必需。规定要比较的第一个字符串。 |
| string2 | 必需。规定要比较的第二个字符串。 |
technical details
| return value: | This function returns:
|
|---|---|
| PHP version: | 4+ |
More examples
Example 1
Compares two strings (case-insensitive, HELLO hELLo and outputs the same):
<?php
echo strcasecmp("Hello","HELLO");
echo "<br>";
echo strcasecmp("Hello","hELLo");
?>
echo strcasecmp("Hello","HELLO");
echo "<br>";
echo strcasecmp("Hello","hELLo");
?>
Running instance »
Example 2
Different return values:
<?php
echo strcasecmp("Hello world!","HELLO WORLD!"); // The two strings are equal
echo strcasecmp("Hello world!","HELLO"); // String1 is greater than string2
echo strcasecmp("Hello world!","HELLO WORLD! HELLO!"); // String1 is less than string2
?>
echo strcasecmp("Hello world!","HELLO WORLD!"); // The two strings are equal
echo strcasecmp("Hello world!","HELLO"); // String1 is greater than string2
echo strcasecmp("Hello world!","HELLO WORLD! HELLO!"); // String1 is less than string2
?>
Running instance »
PHP String Reference