PHP strcmp () function
Examples
Compares two strings (case sensitive):
<?php
echo strcmp("Hello world!","Hello world!");
?>
echo strcmp("Hello world!","Hello world!");
?>
Running instance »
Definition and Usage
strcmp () function compare two strings.
Note: strcmp () function is binary safe and case-sensitive.
Tip: This function strncmp () function is similar, the difference is that) you can specify the number of characters in each string for comparison by strncmp (.
grammar
strcmp( 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 sensitive, Hello and hELLo output are not the same):
<?php
echo strcmp("Hello","Hello");
echo "<br>";
echo strcmp("Hello","hELLo");
?>
echo strcmp("Hello","Hello");
echo "<br>";
echo strcmp("Hello","hELLo");
?>
Running instance »
Example 2
Different return values:
<?php
echo strcmp("Hello world!","Hello world!"); // the two strings are equal
echo strcmp("Hello world!","Hello"); // string1 is greater than string2
echo strcmp("Hello world!","Hello world! Hello!"); // string1 is less than string2
?>
echo strcmp("Hello world!","Hello world!"); // the two strings are equal
echo strcmp("Hello world!","Hello"); // string1 is greater than string2
echo strcmp("Hello world!","Hello world! Hello!"); // string1 is less than string2
?>
Running instance »
PHP String Reference