How can the code for displaying images based on numbers be optimized for better performance in PHP?

The code for displaying images based on numbers can be optimized for better performance in PHP by using an associative array to map the numbers to image file paths. This way, the code doesn't need to loop through a list of if-else conditions to determine which image to display. Instead, it can directly access the image file path using the number as a key in the associative array. 

<?php
// Define an associative array mapping numbers to image file paths
$imageMap = [
    1 => 'image1.jpg',
    2 => 'image2.jpg',
    3 => 'image3.jpg',
    // Add more mappings as needed
];

// Get the number from input or database
$number = 2;

// Display the image based on the number
if(isset($imageMap[$number])) {
    echo '<img src="' . $imageMap[$number] . '" alt="Image">';
} else {
    echo 'Image not found';
}
?>

Keywords

image display optimization performance PHP caching

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