The function treats '_' as after letters and numbers when it would be placed before logically.
(PHP 4, PHP 5, PHP 7, PHP 8)
strnatcasecmp — Case insensitive string comparisons using a "natural order" algorithm
This function implements a comparison algorithm that orders alphanumeric strings in the way a human being would. The behaviour of this function is similar to strnatcmp(), except that the comparison is not case sensitive. For more information see: Martin Pool's » Natural Order String Comparison page.
string1The first string.
string2The second string.
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.
| Version | Description |
|---|---|
| 8.2.0 |
This function is no longer guaranteed to return
strlen($string1) - strlen($string2) when string lengths
are not equal, but may now return -1 or
1 instead.
|
Example #1 strnatcasecmp() example
<?php
var_dump(strnatcasecmp('Apple', 'Banana'));
var_dump(strnatcasecmp('Banana', 'Apple'));
var_dump(strnatcasecmp('apple', 'Apple'));
?>The above example will output:
int(-1) int(1) int(0)
The function treats '_' as after letters and numbers when it would be placed before logically.