How can developers effectively troubleshoot and resolve memory limit errors in PHP code?

Memory limit errors in PHP code can be effectively troubleshooted and resolved by increasing the memory_limit parameter in the php.ini file or using the ini_set() function within the PHP script to dynamically set the memory limit. Additionally, developers can optimize their code by freeing up memory after use, avoiding memory leaks, and using efficient data structures.

// Set memory limit in php.ini file
// memory_limit = 128M

// Or dynamically set memory limit within PHP script
ini_set('memory_limit', '128M');