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What is Xdebug profiling?

What is Xdebug profiling?

Xdebug’s built-in profiler allows you to find bottlenecks in your script and visualize those with an external tool such as KCacheGrind or WinCacheGrind.

How do I use Xdebug profiling?

Enable the Xdebug profiler

  1. Open the active php.ini file in the editor: In the Settings/Preferences dialog ( Ctrl+Alt+S ) , click PHP.
  2. Do one of the following: To permanently enable the profiler, set the xdebug.profiler_enable (for Xdebug 2) or xdebug.mode (for Xdebug 3) directive:

How do I view Xdebug logs?

The log file is configured with the xdebug. log setting. Criticals, errors, and warnings always show up in the diagnostics log that you can view by calling xdebug_info().

What is Xdebug Remote_host?

Xdebug is an extension for PHP to assist with debugging and development. It was determined that Xdebug is configured with xdebug. remote_connect_back option enabled as shown in the following example. xdebug.remote_enable= true xdebug.remote_connect_back= true xdebug.remote_host= 127.0. 0.1 # ignored/disabled.

How do I profile a PHP script?

The five steps of profiling PHP code to find inefficiencies

  1. Step 1: Install on the development machine. Figure 1.
  2. Step 2: Restart all services. Restart all your services.
  3. Step 3: Visit the service, and profile the PHP code.
  4. Step 4: Drill into the code.
  5. Step 5: Time to optimize.

How configure Xdebug in PHP INI?

To enable XDebug profiling, add these entries to your php. ini file….For Windows

  1. Find the line “implicit_flush” and set it as follows:
  2. Find the section called “[Zend]” and comment out all of the lines by putting a semi-colon (“;”) at the start of each line.
  3. Find the line: zend_extension = “c:pp\php\ext\php_xdebug.

How do I run Cachegrind?

5.2. Using Cachegrind, cg_annotate and cg_merge

  1. Running Cachegrind. To run Cachegrind on a program prog , run: valgrind –tool=cachegrind prog.
  2. Output File.
  3. Running cg_annotate.
  4. The Output Preamble.
  5. The Global and Function-level Counts.
  6. Line-by-line Counts.
  7. Annotating Assembly Code Programs.
  8. Forking Programs.

Where is Xdebug config file?

XAMPP for Mac OS X includes the XDebug PHP debugger, but it needs to be added to the “php. ini” file so that XDebug runs when Apache is started. To do this, open up the php. ini file, located at “/Applications/XAMPP/xamppfiles/etc/php.

How configure Xdebug in PHP ini?

What port does Xdebug use?

By default, Xdebug 2 listens on port 9000. For Xdebug 3, the default port has changed from 9000 to 9003. You can specify several ports by separating them with a comma. By default, the Debug port value is set to 9001,9003 to have PhpStorm listen on both ports simultaneously.

What is a PHP profile?

A profiler is a tool that measures how some code consumes resources at run-time. It enables to find performance bottlenecks and understand the code’s behavior. Blackfire Profiler for PHP enables to profile applications during development, test, staging, and production environments.

What is cachegrind and how to use it?

If you want to know how to use it, you only need to read this page. Cachegrind is a tool for doing cache simulations and annotating your source line-by-line with the number of cache misses. In particular, it records:

Where can I find the documentation for PHPUnit 7?

The documentation for PHPUnit 7.0 (and newer) is hosted on phpunit.readthedocs.io. It is available in the following languages: Documentation for PHPUnit 6.5 (and older) is archived at https://phpunit.de/manual/6.5/en/index.html. Simply replace 6.5 with the version number you are looking for.

How do I use Valgrind cachegrind?

Run your program with valgrind –tool=cachegrind in front of the normal command line invocation. When the program finishes, Cachegrind will print summary cache statistics. It also collects line-by-line information in a file cachegrind.out.pid, where pid is the program’s process id.

Where does cachegrind write line by line?

As well as printing summary information, Cachegrind also writes line-by-line cache profiling information to a file named cachegrind.out.pid. This file is human-readable, but is best interpreted by the accompanying program cg_annotate , described in the next section.

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