How can memory usage be monitored and optimized in PHP scripts to prevent fatal errors?

Memory usage in PHP scripts can be monitored and optimized by using functions like memory_get_usage() to track memory consumption. To prevent fatal errors due to excessive memory usage, it is important to regularly check and optimize the code to avoid memory leaks and inefficiencies. Implementing proper memory management techniques, such as unsetting variables when they are no longer needed and using memory-efficient data structures, can help prevent memory exhaustion and fatal errors.

// Monitoring memory usage
$memoryUsage = memory_get_usage();
echo "Current memory usage: " . $memoryUsage . " bytes\n";

// Optimizing memory usage
// Unset variables no longer needed
unset($someVariable);

// Use memory-efficient data structures
$array = range(1, 1000);