PHP strcasecmp() Function Usage and Example

PHP String Manual

The strcasecmp() function is used to compare two strings (case-insensitive)

Syntax

int strcasecmp ( string $str1　, string $str2　)

Definition and Usage

Used to compare two strings

Note: The strcasecmp() function is binary safe and case-insensitive.

Return value

If str1 is less than str2 Returns < 0; if str1 Greater than str2 Returns > 0; if both are equal, returns 0.

Parameter

Online Example

Try the following example to compare two strings, case-insensitive, and return the comparison result:

<?php
　　　//Compare two strings (case-insensitive, Hello and HELlo output the same)
　　　echo strcasecmp("Hello WORLD!","HELlo PHP!");
　　　　
　　　echo '<br>';
　　　　$var1　= "Hello";
　　　　$var2　= "heLLO";
　　　　if (strcasecmp($var1, $var2) == 0) {
　　　　　　　　echo 'In case-insensitive string comparison, $var1equals $var2';
　　　　}
?>

Output result

7
In case-insensitive string comparison, $var1equals $var2

PHP String Manual