How to use the local debugging function provided by php?

How to use the local debugging function provided by php? This simple debugging function is provided in versions later than 5.4. I used it before and forgot how to use it now. who knows?

Reply to discussion (solution)

Do you mean Xdebug?

No. it is a simple HTTP function provided by PHP.

Oh, you mean the HTTP server contained in PHP. this is never used. This should be said to be used for preview and should not be called debugging ....

Oh, you mean the HTTP server contained in PHP. this is never used. This should be said to be used for preview and should not be called debugging ....

The HTTP server

Cd $ PHP_INSTALL_PATH
./Bin/php-S: -T
For example:
Foreground running:
./Bin/php-S localhost: 80-t/data/www/
Background running:
./Bin/php-S localhost: 80-t/data/www/>/tmp/access. log 2> & 1 &

Cd $ PHP_INSTALL_PATH
./Bin/php-S: -T
For example:
Foreground running:
./Bin/php-S localhost: 80-t/data/www/
Background running:
./Bin/php-S localhost: 80-t/data/www/>/tmp/access. log 2> & 1 &

That's all. thank you very much!