Find maximum value from two positive integer values ​​within specified range via PHP

In the previous article "Copy a given string and output a new string through PHP", I introduced you how to copy a given string through PHP and output a new string. Strings, interested friends may wish to take a look ~

Then the theme of this article is "Finding the maximum value from two positive integer values ​​within a specified range through PHP".

Let's expand on this question: "How to write a PHP program to find the larger value from two positive integer values ​​in the range of 20 to 30. If both are not in this range, then Return 0".

You can practice locally and see if you can write this PHP program that meets the requirements!

The following is the method I gave. I don’t know if it is the same as what you think~

The PHP code is as follows:

<?php
function test($x, $y)
{
    if ($x >= 20 && $x <= 30 && $y >= 20 && $y <= 30)
    {
        if ($x >= $y)
        {
            return $x;
        }
        else
        {
            return $y;
        }
    }
    else if ($x >= 20 && $y <= 30)
    {
        return $x;
    }
    else if ($y >= 20 && $y <= 30)
    {
        return $y;
    }
    else
    {
        return 0;
    }
}


echo test(78, 95)."<br>";
echo test(20, 30)."<br>";
echo test(21, 25)."<br>";
echo test(28, 28)."<br>";

Output Result:

0
30
25
28

In the above code, we mainly implement it through PHP if else statements and comparison operators, which is very simple~

Note:

When you write code in PHP, you often want to perform different actions for different decisions, then we can use conditional statements in the code to achieve this a little.

In PHP, the conditional statements we can use are as follows:

if statement: If the specified condition is true, the code will be executed;

if...else statement: If the condition is true, execute the code; if the condition is false, execute the other end of the code;

if...elseif....else statement: execute different code blocks based on two or more conditions;

switch statement: Select one of multiple code blocks to execute.

Finally, I would like to recommend the latest and most comprehensive "PHP Video Tutorial"~ Come and learn!

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