strncmp
(PHP 4, PHP 5, PHP 7, PHP 8)
strncmp — Binary safe string comparison of the first n characters
Description
Note that this comparison is case sensitive.
Parameters
string1-
The first string.
string2-
The second string.
length-
Number of characters to use in the comparison.
Return Values
Returns a value less than 0 if string1
is less than string2; a value greater
than 0 if string1 is greater than
string2, and 0 if they
are equal.
No particular meaning can be reliably inferred from the value aside
from its sign.
Examples
Example #1 strncmp() example
<?php
$var1 = 'Hello John';
$var2 = 'Hello Doe';
if (strncmp($var1, $var2, 5) === 0) {
echo 'First 5 characters of $var1 and $var2 are equal in a case-sensitive string comparison';
}
?>
See Also
- strncasecmp() - Binary safe case-insensitive string comparison of the first n characters
- preg_match() - Perform a regular expression match
- substr_compare() - Binary safe comparison of two strings from an offset, up to length characters
- strcmp() - Binary safe string comparison
- strstr() - Find the first occurrence of a string
- substr() - Return part of a string
strncasecmp
String Functions