What tools or resources are available for PHP developers to optimize their code and troubleshoot performance issues, such as script execution time limits?

To optimize PHP code and troubleshoot performance issues like script execution time limits, developers can use tools like Xdebug for profiling and debugging, PHP's built-in functions like microtime() to measure script execution time, and performance monitoring tools like New Relic or Blackfire. 

// Measure script execution time
$start_time = microtime(true);

// Your PHP code here

$end_time = microtime(true);
$execution_time = $end_time - $start_time;
echo "Script execution time: $execution_time seconds";

Keywords

profiler Xdebug opcode cache memory usage performance tuning

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