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PHP 8 Programming Tips, Tricks, and Best Practices

Solution: Manipulating the String and Array with Advanced Methods

Explore advanced PHP 8 techniques for manipulating strings and arrays, including numeric string addition, comparison, and formatted output. Understand how to concatenate data, calculate averages, and use formatting functions like vprintf and vsprintf for professional-grade coding efficiency.

We'll cover the following...

The code widget below contains the solution to the challenge. We will also go through a step-by-step explanation of the solution.

Solution to Task 1

In this task, we add the given strings and numeric values, then print them to the console using new string handling methods introduced in PHP 8. Also, compare the string and numeric value and display the result using the nested ternary operator and display the output result.

PHP
<?php
// Addition of String and numeric
$numString = "   10";
$numInt = 10;
$patt = "%d + '%-s' : %3d\n";
$num = $numInt + $numString;
printf($patt, $numInt, $numString, $num);
echo "\n";
// String to numeric comparison
echo ($numString == $numInt) ? "String and integer are equal.\n" : "String and integer are not equal.\n";
echo "\n";
?>

Let’s get into the code.

  • Lines 3–9: String-to-numeric addition:

    • We initialize the string ($numString) and an integer ($numInt).

    • We add a numeric string ($numString) and an integer ($numInt) using the + operator.

    • $patt is assigned the format ...