In what ways can adjusting memory_limit in PHP settings impact the execution of scripts, and what are best practices for determining appropriate memory limits for image processing tasks?

Adjusting the memory_limit in PHP settings can impact the execution of scripts by allowing scripts to consume more memory during runtime. This can be beneficial for tasks that require a higher memory allocation, such as image processing. It is important to determine appropriate memory limits for image processing tasks to prevent memory exhaustion and optimize performance.

// Set memory limit for image processing tasks
ini_set('memory_limit', '256M');