strcasecmp

(PHP 4, PHP 5, PHP 7, PHP 8)

strcasecmp — Binary safe case-insensitive string comparison

Description

strcasecmp(string $string1, string $string2): int

Binary safe case-insensitive string comparison. The comparision is not locale aware; only ASCII letters are compared in a case-insensitive way.

Parameters

string1

The first string

string2

The second string

Return Values

Returns < 0 if string1 is less than string2; > 0 if string1 is greater than string2, and 0 if they are equal.

Examples

Example #1 strcasecmp() example

<?php
$var1 = "Hello";
$var2 = "hello";
if (strcasecmp($var1, $var2) == 0) {
    echo '$var1 is equal to $var2 in a case-insensitive string comparison';
}
?>

See Also

  • strcmp() - Binary safe string comparison
  • preg_match() - Perform a regular expression match
  • substr_compare() - Binary safe comparison of two strings from an offset, up to length characters
  • strncasecmp() - Binary safe case-insensitive string comparison of the first n characters
  • stristr() - Case-insensitive strstr
  • substr() - Return part of a string