How can bottlenecks in PHP scripts be identified?

Bottlenecks in PHP scripts can be identified by using profiling tools such as Xdebug or Blackfire. These tools can help pinpoint areas of code that are consuming a significant amount of resources or taking a long time to execute. Once bottlenecks are identified, optimizations can be made to improve the performance of the script. 

// Enable Xdebug profiling
xdebug_start_profiling();

// Your PHP script here

// Stop Xdebug profiling
xdebug_stop_profiling();

// Analyze the generated profile to identify bottlenecks

Keywords

profiling performance tuning Xdebug memory usage code optimization

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