PHP strnatcasecmp() Function

Complete PHP String Reference

Definition and Usage

The strnatcasecmp() function compares two strings using a "natural" algorithm.

In a natural algorithm, the number 2 is less than the number 10. In computer sorting, 10 is less than 2, because the first number in "10" is less than 2.

This function returns:

• 0 - if the two strings are equal
• <0 - if string1 is less than string2
• >0 - if string1 is greater than string2

Syntax

strnatcasecmp(string1,string2)

Tips and Notes

Note: The strnatcasecmp() is case-insensitive.

Example

<?php
echo strnatcasecmp("2Hello world!","10Hello world!");
echo "<br />";
echo strnatcasecmp("10Hello world!","2Hello world!");
?>

The output of the code above will be:

-1
1

Complete PHP String Reference

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