What functions or methods in PHP can be used to monitor and optimize memory usage in a project?

Monitoring and optimizing memory usage in a PHP project is crucial for ensuring efficient performance and preventing memory leaks. One way to achieve this is by using functions like memory_get_peak_usage() to track the peak memory usage during script execution. Additionally, using functions like unset() to free up memory by unsetting variables that are no longer needed can help optimize memory usage. 

// Get peak memory usage
$peak_memory_usage = memory_get_peak_usage(true);
echo "Peak memory usage: " . round($peak_memory_usage / (1024 * 1024), 2) . " MB";

// Unset variables to free up memory
unset($variable1, $variable2, $variable3);

Keywords

memory usage optimization monitoring functions methods

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