What are some common methods for measuring code speed and performance in PHP?

One common method for measuring code speed and performance in PHP is to use the microtime() function to calculate the execution time of a specific block of code. By measuring the time before and after the code block, you can determine how long it takes to run. Another method is to use profiling tools like Xdebug or Blackfire.io to analyze the performance of your code and identify any bottlenecks. 

$start_time = microtime(true);

// Code block to measure performance
for ($i = 0; $i < 1000; $i++) {
    // Code to be measured
}

$end_time = microtime(true);
$execution_time = $end_time - $start_time;

echo "Execution time: " . $execution_time . " seconds";

Keywords

profiling benchmarking performance tuning opcode caching xdebug

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