What are the potential reasons for the memory size error when using ImageCopyResized() and ImageJPEG() functions in PHP?

When using the ImageCopyResized() and ImageJPEG() functions in PHP, a memory size error can occur if the images being processed are too large. To solve this issue, you can increase the memory limit in your PHP configuration or resize the images before processing them.

// Increase memory limit
ini_set('memory_limit', '256M');

// Your code using ImageCopyResized() and ImageJPEG() functions here