How can developers track and locate memory usage in their PHP applications?

Developers can track and locate memory usage in their PHP applications by using functions like memory_get_peak_usage() and memory_get_usage(). These functions allow developers to monitor the memory consumption of their scripts at different points during execution. By strategically placing these functions in their code, developers can identify areas where memory usage is high and optimize their application accordingly.

// Track memory usage at the beginning of the script
$memoryUsageStart = memory_get_usage();

// Code implementation goes here

// Track memory usage at the end of the script
$memoryUsageEnd = memory_get_usage();

// Calculate memory usage
$memoryUsage = $memoryUsageEnd - $memoryUsageStart;

echo "Memory usage: " . $memoryUsage . " bytes";