In PHP, how do I merge strings in a memory-efficient way?

<?php
// Example strings to be merged
$string1 = "This is the first part of the string.";
$string2 = "This is the second part of the string.";

// Merging strings in a memory-efficient way using concatenation
$mergedString = $string1 . " " . $string2;

// Output the merged string
echo $mergedString;
?>
` as per your requirement. The PHP code is shown inside a `` tag with the specified classes. 4. **HTML Special Characters**: The `htmlspecialchars` function is used to safely output the keywords and description, preventing any potential HTML injection issues. You can use this structure to generate your desired output dynamically in a PHP context.