Difference between revisions of "Sven/PHP"
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(wfDebug(); for MediaWiki profiler doesn't seem to work) |
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ini_set("display_errors", 1); | ini_set("display_errors", 1); | ||
</php> | </php> | ||
| + | |||
| + | ==MediaWiki profiler== | ||
| + | The article [[MW:How to debug|how to debug] MediaWiki provides information on setting up the profiler by adding the globals to your LocalSettings.php file; | ||
| + | |||
| + | <php> | ||
| + | /** | ||
| + | * The debug log file should be not be publicly accessible if it is used, as it | ||
| + | * may contain private data. But it must be in a directory to which PHP run | ||
| + | * within your Web server can write. */ | ||
| + | $wgDebugLogFile = '/tmp/MW_log.txt'; | ||
| + | |||
| + | # | ||
| + | # Profiling / debugging | ||
| + | # | ||
| + | |||
| + | /** Enable for more detailed by-function times in debug log */ | ||
| + | $wgProfiling = true; | ||
| + | /** Only record profiling info for pages that took longer than this */ | ||
| + | $wgProfileLimit = 0.0; | ||
| + | /** Don't put non-profiling info into log file */ | ||
| + | $wgProfileOnly = false; | ||
| + | /** Log sums from profiling into "profiling" table in db. */ | ||
| + | $wgProfileToDatabase = false; | ||
| + | /** Only profile every n requests when profiling is turned on */ | ||
| + | $wgProfileSampleRate = 1; | ||
| + | /** If true, print a raw call tree instead of per-function report */ | ||
| + | $wgProfileCallTree = false; | ||
| + | /** If not empty, specifies profiler type to load */ | ||
| + | $wgProfilerType = ''; | ||
| + | |||
| + | /** Settings for UDP profiler */ | ||
| + | $wgUDPProfilerHost = '127.0.0.1'; | ||
| + | $wgUDPProfilerPort = '3811'; | ||
| + | |||
| + | /** Detects non-matching wfProfileIn/wfProfileOut calls */ | ||
| + | $wgDebugProfiling = true; | ||
| + | /** Output debug message on every wfProfileIn/wfProfileOut */ | ||
| + | $wgDebugFunctionEntry = 1; | ||
| + | /** Lots of debugging output from SquidUpdate.php */ | ||
| + | $wgDebugSquid = false; | ||
| + | </php> | ||
| + | However if you include in an extension; | ||
| + | <php | ||
| + | include("$IP/includes/GlobalFunctions.php"); | ||
| + | wfDebug("This is just testing the debug tracing stuff\n"); | ||
| + | </php> | ||
| + | there seems to be no output in the generated log file. | ||
==See also== | ==See also== | ||
Revision as of 03:37, 10 December 2007
Debugging PHP
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Debuggers generally use a W:Stack trace. This can be approximated by using print and die statements in sections of code. The combination of print_r and func_get_args allows you to return an array of args that a function was called with;
print_r(func_get_args());
Casting an object of an array builds an array of the properties, mapping property names to values. e.g.
class Person {
var $name = "Fred";
var $age = 35;
}
$o = new Person;
$a = (array) $o
print_r($a);
outputs;
- Array
- (
- [name] => Fred
- [age] => 35
- )
|
From Sven/Notes, Extension:Fasta.php; <php>
- Logging to an article from within the MW environment
function logAdd($article,$msg) { $ts = $GLOBALS['wgLang']->timeanddate(wfTimestampNow(),true); $la = new Article(Title::newFromText($article)); $la->quickEdit($la->getContent()."\n*$ts: $msg"); }
- Logging to a file
function logFile($file, $msg) { $fh = fopen($file,'a'); $ts = $GLOBALS['wgLang']->timeanddate(wfTimestampNow(),true); if(is_array($msg)) $msg = print_r($msg, true); fwrite($fh, "\n$ts: $msg"); } </php>
PHP errors
To see PHP errors, add this to the very top of LocalSettings.php: <php> error_reporting(E_ALL); ini_set("display_errors", 1); </php>
MediaWiki profiler
The article [[MW:How to debug|how to debug] MediaWiki provides information on setting up the profiler by adding the globals to your LocalSettings.php file;
<php> /**
* The debug log file should be not be publicly accessible if it is used, as it * may contain private data. But it must be in a directory to which PHP run * within your Web server can write. */
$wgDebugLogFile = '/tmp/MW_log.txt';
- Profiling / debugging
/** Enable for more detailed by-function times in debug log */ $wgProfiling = true; /** Only record profiling info for pages that took longer than this */ $wgProfileLimit = 0.0; /** Don't put non-profiling info into log file */ $wgProfileOnly = false; /** Log sums from profiling into "profiling" table in db. */ $wgProfileToDatabase = false; /** Only profile every n requests when profiling is turned on */ $wgProfileSampleRate = 1; /** If true, print a raw call tree instead of per-function report */ $wgProfileCallTree = false; /** If not empty, specifies profiler type to load */ $wgProfilerType = ;
/** Settings for UDP profiler */ $wgUDPProfilerHost = '127.0.0.1'; $wgUDPProfilerPort = '3811';
/** Detects non-matching wfProfileIn/wfProfileOut calls */ $wgDebugProfiling = true; /** Output debug message on every wfProfileIn/wfProfileOut */ $wgDebugFunctionEntry = 1; /** Lots of debugging output from SquidUpdate.php */ $wgDebugSquid = false; </php> However if you include in an extension; <php include("$IP/includes/GlobalFunctions.php"); wfDebug("This is just testing the debug tracing stuff\n"); </php> there seems to be no output in the generated log file.
