PHP Exercises: Create a new string without the first and last character of a given string of any length

PHP Basic Algorithm: Exercise-69 with Solution

Write a PHP program to create a new string without the first and last character of a given string of any length.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that extracts the middle portion of a string, excluding the first and last characters
function test($s1)
{ 
    // Check if the string has less than 2 characters and return an empty string if true
    return strlen($s1) < 2 ? "" : substr($s1, 1, strlen($s1) - 2);
}

// Test the 'test' function with different strings and display the results
echo test("Hello")."\n";
echo test("JS")."\n";
echo test("  ")."\n";
?>

Explanation:

• Function Definition:
• A function named test is defined, which takes one parameter, $s1, representing the input string.
• Length Check:
• The function checks if the length of the string $s1 is less than 2:
• If true (the string has 0 or 1 character), it returns an empty string "".
• If false (the string has 2 or more characters), it proceeds to the next step.
• Substring Extraction:
• If the string length is sufficient, it uses the substr function to extract the middle portion of the string:
• substr($s1, 1, strlen($s1) - 2):
• This extracts a substring starting from the second character (index 1) up to the second-to-last character.
• The length of the extracted substring is calculated as strlen($s1) - 2, effectively removing the first and last characters from the original string.

Output:

ell

Flowchart:

PHP Code Editor:

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