How can variables containing image file paths be properly integrated into image resizing scripts in PHP?

When integrating variables containing image file paths into image resizing scripts in PHP, you can use the `imagecreatefromjpeg()`, `imagecreatefrompng()`, or `imagecreatefromgif()` functions to create an image resource from the file path. Then, you can use the `imagesx()` and `imagesy()` functions to get the original dimensions of the image. Finally, you can use the `imagecopyresampled()` function to resize the image to the desired dimensions.

// Example code snippet
$filePath = 'path/to/image.jpg';

// Create image resource from file path
$image = imagecreatefromjpeg($filePath);

// Get original dimensions of the image
$originalWidth = imagesx($image);
$originalHeight = imagesy($image);

// Define new dimensions for resizing
$newWidth = 200;
$newHeight = 150;

// Create a new image resource with the new dimensions
$newImage = imagecreatetruecolor($newWidth, $newHeight);

// Resize the image to the new dimensions
imagecopyresampled($newImage, $image, 0, 0, 0, 0, $newWidth, $newHeight, $originalWidth, $originalHeight);

// Output or save the resized image
imagejpeg($newImage, 'path/to/resized_image.jpg');

// Free up memory
imagedestroy($image);
imagedestroy($newImage);