PHP Exercises: Create a new string taking the first 3 characters of a given string and return the string with the 3 characters added at both the front and back

PHP Basic Algorithm: Exercise-11 with Solution

Write a PHP program to create a new string taking the first 3 characters of a given string and return the string with the 3 characters added at both the front and back. If the given string length is less than 3, use whatever characters are there.

Sample Solution:

PHP Code :

<?php
// Define a function named "test" that takes a parameter $str
function test($str) 
{
    // Use an if-else statement to check if the length of $str is less than 3
    if (strlen($str) < 3) {
        // If true, concatenate $str with itself twice and return the result
        return $str . $str . $str;
    } else {
        // If false, use substr to get the first three characters of $str
        $front = substr($str, 0, 3);
        
        // Concatenate $front, $str, and $front, then return the result
        return $front . $str . $front;
    }
}

// Call the test function with argument "Python" and echo the result
echo test("Python") . "\n";

// Call the test function with argument "JS" and echo the result
echo test("JS") . "\n";

// Call the test function with argument "Code" and echo the result
echo test("Code") . "\n";
?>

Sample Output:

PytPythonPyt
JSJSJS
CodCodeCod

Visual Presentation:

Flowchart:

PHP Code Editor:

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