How to use strcmp() function to compare strings in PHP

<span style="font-size: 14px;"> Comparative size of integer and floating point data in PHP</span>, It is more convenient, but it is more troublesome to compare strings. How to compare string data types, PHP provides the built-in function strcmp() for easy use.

Syntax:

strcmp(string $str1 , string $str2 )

• $str1: The first string.

• $str2: The second string.

Equal case

<?php 
$a=strcmp("Hello world!","Hello world!");
echo $a."<br>"; //0
?>

Greater than case

<?php 

$b=strcmp("Hello world!","Hello");
echo $b."<br>"; // 7
?>

If it is less than

<?php 
$c=strcmp("Hello world!","Hello world! Hello!");
echo $c."<br>"; // -7
?>

The comparison of the strcmp() function is based on the ASCII code size.

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