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.
Similar to other string comparison functions, this one returns -1 if
string1 is less than string2
1 if string1 is greater than
string2, and 0 if they are equal.
| Version | Description |
|---|---|
| 8.2.0 |
This function now returns -1 or 1,
where it previously returned a negative or positive number.
|
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.