How can the PHP script be modified to ensure that images are resized proportionally within specified dimensions?

To ensure that images are resized proportionally within specified dimensions, we can calculate the aspect ratio of the original image and then resize the image based on the aspect ratio to maintain proportions. This can be achieved by determining whether the width or height of the image needs to be resized to fit within the specified dimensions while maintaining the aspect ratio. 

// Specify the maximum dimensions for the resized image
$maxWidth = 300;
$maxHeight = 200;

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

// Calculate the aspect ratio of the original image
$aspectRatio = $originalWidth / $originalHeight;

// Determine whether to resize based on width or height
if ($originalWidth > $originalHeight) {
    $newWidth = $maxWidth;
    $newHeight = $maxWidth / $aspectRatio;
} else {
    $newHeight = $maxHeight;
    $newWidth = $maxHeight * $aspectRatio;
}

// Resize the image proportionally
$resizedImage = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($resizedImage, $originalImage, 0, 0, 0, 0, $newWidth, $newHeight, $originalWidth, $originalHeight);

Keywords

PHP image resizing proportional specified dimensions GD library

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