PHP Exercises: Create a new array using the first n strings from a given array of strings

Last update on April 16 2025 12:51:46 (UTC/GMT +8 hours)

134. New Array from First n Strings

Write a PHP program to create a new array using the first n strings from a given array of strings. (n>=1 and <=length of the array).

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes an array of strings and an integer 'n'
function test($arr_str, $n)
{ 
    // Initialize a new array with a size equal to the number of elements in the input array
    $new_array = [sizeof($arr_str)];

    // Iterate through the array up to the specified 'n' elements
    for ($i = 0; $i < $n; $i++)
    {
        // Copy each element from the input array to the new array
        $new_array[$i] = $arr_str[$i];
    }

    // Return the new array containing the first 'n' elements
    return $new_array;
}

// Call the 'test' function with an array and 'n' value, then use 'implode' to print the result as a string
$result = test(["a", "b", "bb", "c", "ccc"], 3);
echo implode(" ", $result);
?>

Sample Output:

a b bb

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to take the first n elements from an array of strings and output a new array containing these elements.
Write a PHP function to slice an array based on an input parameter n and return the resulting subarray.
Write a PHP program to validate the value of n and then use array_slice() to form a new array from the first n strings.
Write a PHP script to manually loop through an array and extract the first n strings into a new array.

PHP Code Editor:

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