How can the memory_limit be adjusted to prevent Error 500 when loading multiple images in PHP?

When loading multiple images in PHP, the memory_limit can be adjusted in the php.ini file or programmatically using the ini_set() function to prevent Error 500. By increasing the memory_limit, PHP will have more memory available to handle the processing of multiple images, reducing the likelihood of running out of memory and causing the server to return an Error 500.

// Adjust memory_limit programmatically
ini_set('memory_limit', '256M');