strncmp
(PHP 4, PHP 5, PHP 7, PHP 8)
strncmp — Binary safe string comparison of the first n characters
Description
strncmp(string
$string1, string $string2, int $length): intThis function is similar to strcmp(), with the difference that you can specify the (upper limit of the) number of characters from each string to be used in the comparison.
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 < 0 if string1 is less than
string2; > 0 if string1
is greater than string2, and 0 if they are
equal.
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 equals 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
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