How can PHP be used to manipulate or analyze images after they have been downloaded onto the server?

To manipulate or analyze images after they have been downloaded onto the server using PHP, you can utilize the GD library which provides functions for image processing. You can resize, crop, rotate, add watermarks, apply filters, and perform various other operations on images using GD functions in PHP. 

// Example code to resize an image using GD library
$source_image = 'path/to/source/image.jpg';
$destination_image = 'path/to/destination/image.jpg';
$new_width = 200;
$new_height = 150;

list($width, $height) = getimagesize($source_image);
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($source_image);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_p, $destination_image, 100);

Keywords

PHP image manipulation image analysis GD library image processing

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