How to use strnatcmp function in php

Usage of strnatcmp function in php: [strnatcmp($string1,$string2)]. The strnatcmp function compares two strings (case-sensitive) by using a "natural algorithm".

strnatcmp() is a built-in function of PHP that uses the "natural order" algorithm to compare two strings and return a positive integer, a negative number, or zero; case sensitive. The syntax is strnatcmp($string1,$string2), which accepts two required string parameters for comparison.

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php How to use the strnatcmp() function?

php The strnatcmp function is used to compare two strings in a "natural order" algorithm, case-sensitive.

Basic syntax:

strnatcmp($string1,$string2)

Parameters: strnatcmp() function accepts two required string parameters for comparison

●$string1: required parameter, specifies the first string to be compared.

●　$string2: Required parameter, specifies the second string to be compared.

Return value: The strnatcmp() function returns an integer value based on the following conditions:

● If the two strings are equal, the function returns 0.

● If $string1 is less than $string2, the function returns a negative value (

● If $string2 is less than $string1, the function returns a positive value (> 0).

Explanation: In the 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.

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

<?php
//使用自然算法来比较两个字符串
echo strnatcmp("2hello world!","01hello world!");
echo "<br>";
echo strnatcmp("01hello world!","2hello world!");
?>

Output:

1
-1

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