![]() ![]() # Let's use a GET/POST parameter to turn on the profiler # Set to 1 to turn it on for every request This allows us to keep settings static and turn on the profiler only as needed. In our example we will run the profile optionally based on a request parameter. Some Linux distributions come with standard packages (e.g. To enable profiling, install the extension and adjust php.ini settings. No application code changes are necessary to perform this profiling. Applications are available on each platform to analyze these files. When running the profiler, the output is written to a file in a binary format called "cachegrind". Profiling with XDebugĪn extension to PHP called Xdebug is available to assist in profiling PHP applications, as well as runtime debugging. Mysql_close() //close database connectionĬross posting my reference from SO Documentation beta which is going offline. $select_query = "SELECT * FROM data_table" Here is an example, calling prof_flag() with a description at each checkpoint, and prof_print() at the end: prof_flag("Start") Call this when you're done and want to see the resultsĮcho sprintf(" %f", $prof_timing-$prof_timing) Call this at each point of interest, passing a descriptive string Tutorial if you are only interested in web programming.No extensions are needed, just use these two functions for simple profiling. Start writing simple scripts in a few hours.Īlthough PHP's development is focused on server-side scripting, The best part about using PHP is that it is extremely simpleįor a newcomer, but offers many advanced features forĪ professional programmer. Way that users can tell what you have up your sleeve. To process all your HTML files with PHP, and then there's really no The results of running that script, but would not know Is that the code is executed on the server, generating HTML which What distinguishes PHP from something like client-side JavaScript That allow you to jump into and out of "PHP mode." The PHP code is enclosed in special start and end processing "something" (in this case, output "Hi, I'm a PHP script!"). PHP pages contain HTML with embedded code that does Instead of lots of commands to output HTML (as seen in C or Perl), ![]() Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search ![]()
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