How to use strnatcasecmp function in php

Usage of strnatcasecmp function in php: [strnatcasecmp($string1, $string2)]. The strnatcasecmp function can compare two strings through a "natural algorithm".

The strnatcasecmp() function is a built-in function in PHP that uses the "natural order" algorithm to compare two strings (not case-sensitive). The syntax is strnatcasecmp($string1, $string2) accepts two strings as parameters and returns an integer value (positive, negative or zero).

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php How to use the strnatcasecmp() function?

php The strnatcasecmp() function uses the "natural" algorithm to compare two strings (case-insensitive).

Note: The strnatcasecmp() function is similar to the strnatcmp() function. The only difference is that the function is not case-sensitive.

Basic syntax:

strnatcasecmp（$string1，$string2）

Parameters: The function accepts two required string parameters, as shown in the syntax above. These parameters are defined as follows:

●　$string1: This parameter specifies the first string to be compared and cannot be omitted.

●　$string2: This parameter specifies the second string to be compared and cannot be omitted.

Return value: This function returns a positive integer, a negative number, or 0 depending on the following conditions:

● If the two strings are equal, it returns 0 if $string1 is greater than $ string2, a positive value (> 0) is returned.

●If $string1 is less than $string2, return a negative value (<0).

Let’s take a look at how to use the php strnatcasecmp() function through an example.

Example 1:

<?php
echo strnatcasecmp("2hello world!","01hello world!");
echo "<br>";
echo strnatcasecmp("01hello world!","2hello world!");
?>

输出：
1
-1

Example 2:

<?php 
  
echo strnatcasecmp("Hello", "HELLO"); 
echo "<br>";
echo strnatcmp("Hello", "HELLO"); 
  
?>

Output:

0
1

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