How can PHP developers prevent memory allocation errors when processing images, especially in cases where the file size is within limits?

Memory allocation errors when processing images in PHP can be prevented by increasing the memory limit in the PHP configuration file (php.ini) or by dynamically adjusting the memory limit within the script using the `ini_set()` function. Additionally, developers can optimize their image processing code by using libraries like GD or Imagick, which provide efficient memory management functions.

// Increase memory limit in PHP configuration file
// or dynamically adjust memory limit within the script
ini_set('memory_limit', '256M');

// Example image processing code using GD library
$image = imagecreatefromjpeg('example.jpg');
// Perform image processing operations
// Remember to free memory allocated for the image
imagedestroy($image);