What are some best practices for handling image manipulation in PHP?

When handling image manipulation in PHP, it is important to use libraries like GD or Imagick to ensure proper image processing and manipulation. These libraries provide functions for resizing, cropping, rotating, and applying filters to images. It is also crucial to validate user input to prevent security vulnerabilities such as file upload attacks. 

// Example of resizing an image using the GD library
$sourceImage = 'image.jpg';
$destinationImage = 'resized_image.jpg';
list($width, $height) = getimagesize($sourceImage);
$newWidth = 100;
$newHeight = 100;
$newImage = imagecreatetruecolor($newWidth, $newHeight);
$source = imagecreatefromjpeg($sourceImage);
imagecopyresized($newImage, $source, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
imagejpeg($newImage, $destinationImage);
imagedestroy($newImage);
imagedestroy($source);

Keywords

GD library image processing image resizing image cropping image compression

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