PHP Exercises: Create a new string taking the first character from a given string and the last character from another given string

PHP Basic Algorithm: Exercise-76 with Solution

Write a PHP program to create a new string taking the first character from a given string and the last character from another given string. If the length of any given string is 0, use '#' as its missing character.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that extracts the first and last characters from two input strings
function test($s1, $s2)
{ 
    // Initialize an empty string to store the last characters
    $lastChars = "";

    // Check if the first string has a length greater than 0
    if (strlen($s1) > 0)
    {
        // If true, append the first character of $s1 to $lastChars
        $lastChars = $lastChars.substr($s1, 0, 1);
    }
    else
    {
        // If false, append "#" to $lastChars
        $lastChars = $lastChars."#";
    }

    // Check if the second string has a length greater than 0
    if (strlen($s2) > 0)
    {
        // If true, append the last character of $s2 to $lastChars
        $lastChars = $lastChars.substr($s2, strlen($s2) - 1);
    }
    else
    {
        // If false, append "#" to $lastChars
        $lastChars = $lastChars."#";
    }

    // Return the concatenated string containing the last characters
    return $lastChars;
}

// Test the 'test' function with different strings, then display the results using echo
echo test("Hello", "Hi")."\n";
echo test("Python", "PHP")."\n";
echo test("JS", "JS")."\n";
echo test("Csharp", "")."\n";
?>

Sample Output:

Hi
PP
JS
C#

Flowchart:

PHP Code Editor:

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