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xdebug extension for php | documentation
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» documentation for: xdebug 2
» installation
this section describes on how to install xdebug.
» basic features
xdebug's basic functions include the display of stack traces on error conditions, maximum nesting level protection and time tracking.
» variable display features
xdebug replaces php's var_dump() function for displaying variables. xdebug's version includes different colors for different types and places limits on the amount of array elements/object properties, maximum depth and string lengths. there are a few other functions dealing with variable display as well.
» stack traces
when xdebug is activated it will show a stack trace whenever php decides to show a notice, warning, error etc. the information that stack traces display, and the way how they are presented, can be configured to suit your needs.
» function traces
xdebug allows you to log all function calls, including parameters and return values to a file in different formats.
» code coverage analysis
code coverage tells you which lines of script (or set of scripts) have been executed during a request. with this information you can for example find out how good your unit tests are.
» profiling php scripts
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.
» remote debugging
xdebug provides an interface for debugger clients that interact with running php scripts. this section explains how to set-up php and xdebug to allow this, and introduces a few clients.
» faq
frequently asked questions
» all configuration settings
» all functions
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