A php error and exception handling class _ PHP Tutorial with very good display results

Source: Internet
Author: User
Tags php debug
A php error and exception handling class with very good display results. I. II. implement code replication code :? Php custom exception function set_exception_handler (handle_exception); custom error function set_error_handler 1 ,:


II. implementation code

The code is as follows:

// Custom exception functions
Set_exception_handler ('handle _ exception ');

// Custom error functions
Set_error_handler ('handle _ error ');

/**
* Exception handling
*
* @ Param mixed $ exception object
* @ Author blog.snsgou.com
*/
Function handle_exception ($ exception ){
Error: exceptionError ($ exception );
}

/**
* Handle errors
*
* @ Param string $ errNo error code
* @ Param string $ errStr error message
* @ Param string $ errFile error file
* @ Param string $ errLine error line
* @ Author blog.snsgou.com
*/
Function handle_error ($ errNo, $ errStr, $ errFile, $ errLine ){
If ($ errNo ){
Error: systemError ($ errStr, false, true, false );
}
}

/**
* System error handling
*
* @ Author blog.snsgou.com
*/
Class Error {

Public static function systemError ($ message, $ show = true, $ save = true, $ halt = true ){

List ($ showTrace, $ logTrace) = self: debugBacktrace ();

If ($ save ){
$ MessageSave =''. $ Message .'
PHP:'. $ LogTrace;
Self: writeErrorLog ($ messageSave );
}

If ($ show ){
Self: showError ('system ',"

  • $ Message
  • ", $ ShowTrace, 0 );
    }

    If ($ halt ){
    Exit ();
    } Else {
    Return $ message;
    }
    }

    /**
    * Code execution backtracking information
    *
    * @ Static
    * @ Access public
    */
    Public static function debugBacktrace (){
    $ SkipFunc [] = 'Error-> debugBacktrace ';

    $ Show = $ log = '';
    $ DebugBacktrace = debug_backtrace ();
    Ksort ($ debugBacktrace );
    Foreach ($ debugBacktrace as $ k => $ error ){
    If (! Isset ($ error ['file']) {
    // Use the Reflection API to obtain the file and number of rows where the method/function is located
    Try {
    If (isset ($ error ['class']) {
    $ Reflection = new ReflectionMethod ($ error ['class'], $ error ['function']);
    } Else {
    $ Reflection = new ReflectionFunction ($ error ['function']);
    }
    $ Error ['file'] = $ reflection-> getFileName ();
    $ Error ['line'] = $ reflection-> getStartLine ();
    } Catch (Exception $ e ){
    Continue;
    }
    }

    $ File = str_replace (SITE_PATH, '', $ error ['file']);
    $ Func = isset ($ error ['class'])? $ Error ['class']: '';
    $ Func. = isset ($ error ['type'])? $ Error ['type']: '';
    $ Func. = isset ($ error ['function'])? $ Error ['function']: '';
    If (in_array ($ func, $ skipFunc )){
    Break;
    }
    $ Error ['line'] = sprintf ('% 04d', $ error ['line']);

    $ Show. ='

  • [Line: '. $ error ['line'].'] '. $ file.' ('. $ func .')
  • ';
    $ Log. =! Empty ($ log )? '-> ':'';
    $ Log. = $ file. ':'. $ error ['line'];
    }
    Return array ($ show, $ log );
    }

    /**
    * Exception handling
    *
    * @ Static
    * @ Access public
    * @ Param mixed $ exception
    */
    Public static function exceptionError ($ exception ){
    If ($ exception instanceof DbException ){
    $ Type = 'DB ';
    } Else {
    $ Type = 'system ';
    }
    If ($ type = 'DB '){
    $ ErrorMsg = '('. $ exception-> getCode ().')';
    $ ErrorMsg. = self: sqlClear ($ exception-> getMessage (), $ exception-> getDbConfig ());
    If ($ exception-> getSql ()){
    $ ErrorMsg. ='

    ';
    $ ErrorMsg. = self: sqlClear ($ exception-> getSql (), $ exception-> getDbConfig ());
    $ ErrorMsg. ='

    ';
    }
    } Else {
    $ ErrorMsg = $ exception-> getMessage ();
    }
    $ Trace = $ exception-> getTrace ();
    Krsort ($ trace );
    $ Trace [] = array ('file' => $ exception-> getFile (), 'line' => $ exception-> getLine (), 'function' => 'break ');
    $ PhpMsg = array ();
    Foreach ($ trace as $ error ){
    If (! Empty ($ error ['function']) {
    $ Fun = '';
    If (! Empty ($ error ['class']) {
    $ Fun. = $ error ['class']. $ error ['type'];
    }
    $ Fun. = $ error ['function']. '(';
    If (! Empty ($ error ['args']) {
    $ Mark = '';
    Foreach ($ error ['args'] as $ arg ){
    $ Fun. = $ mark;
    If (is_array ($ arg )){
    $ Fun. = 'array ';
    } Elseif (is_bool ($ arg )){
    $ Fun. = $ arg? 'True': 'false ';
    } Elseif (is_int ($ arg )){
    $ Fun. = (defined ('site _ debug') & SITE_DEBUG )? $ Arg: '% d ';
    } Elseif (is_float ($ arg )){
    $ Fun. = (defined ('site _ debug') & SITE_DEBUG )? $ Arg: '% f ';
    } Else {
    $ Fun. = (defined ('site _ debug') & SITE_DEBUG )? '\ ''. Htmlspecialchars (substr (self: clear ($ arg), 0, 10). (strlen ($ arg)> 10? '...': ''). '\'':' % S ';
    }
    $ Mark = ',';
    }
    }
    $ Fun. = ')';
    $ Error ['function'] = $ fun;
    }
    If (! Isset ($ error ['line']) {
    Continue;
    }
    $ PhpMsg [] = array ('file' => str_replace (array (SITE_PATH, '\'), array ('','/'), $ error ['file']), 'line' => $ error ['line'], 'function' => $ error ['function']);
    }
    Self: showError ($ type, $ errorMsg, $ phpMsg );
    Exit ();
    }

    /**
    * Record error logs
    *
    * @ Static
    * @ Access public
    * @ Param string $ message
    */
    Public static function writeErrorLog ($ message ){

    Return false; // do not write data temporarily

    $ Message = self: clear ($ message );
    $ Time = time ();
    $ File = LOG_PATH. '/'. date ('Y. m. D'). '_ errorlog. php ';
    $ Hash = md5 ($ message );

    $ UserId = 0;
    $ Ip = get_client_ip ();

    $ User ='User:UserId = '. intval ($ userId).'; IP = '. $ ip.'; RIP: '. $ _ SERVER ['remote _ ADDR'];
    $ Uri = 'Request: '. htmlspecialchars (self: clear ($ _ SERVER ['request _ URI']);
    $ Message =" \ T {$ time} \ t $ message \ t $ hash \ t $ user $ uri \ n ";

    // Determine whether the $ message has been recorded in the time interval $ maxtime. If yes, no record is required.
    If (is_file ($ file )){
    $ Fp = @ fopen ($ file, 'RB ');
    $ Lastlen = 50000; // read the last $ lastlen length bytes.
    $ Maxtime = 60*10; // interval: 10 minutes
    $ Offset = filesize ($ file)-$ lastlen;
    If ($ offset> 0 ){
    Fseek ($ fp, $ offset );
    }
    If ($ data = fread ($ fp, $ lastlen )){
    $ Array = explode ("\ n", $ data );
    If (is_array ($ array ))
    Foreach ($ array as $ key => $ val ){
    $ Row = explode ("\ t", $ val );
    If ($ row [0]! =' '){
    Continue;
    }
    If ($ row [3] === hash & ($ row [1]> $ time-$ maxtime )){
    Return;
    }
    }
    }
    }

    Error_log ($ message, 3, $ file );
    }

    /**
    * Clear some characters in text
    *
    * @ Param string $ message
    */
    Public static function clear ($ message ){
    Return str_replace (array ("\ t", "\ r", "\ n"), "", $ message );
    }

    /**
    * SQL statement character cleanup
    *
    * @ Static
    * @ Access public
    * @ Param string $ message
    * @ Param string $ dbConfig
    */
    Public static function sqlClear ($ message, $ dbConfig ){
    $ Message = self: clear ($ message );
    If (! (Defined ('site _ debug') & SITE_DEBUG )){
    $ Message = str_replace ($ dbConfig ['database'], '***', $ message );
    // $ Message = str_replace ($ dbConfig ['prefix'], '***', $ message );
    $ Message = str_replace (C ('Db _ prefix'), '***', $ message );
    }
    $ Message = htmlspecialchars ($ message );
    Return $ message;
    }

    /**
    * Display error
    *
    * @ Static
    * @ Access public
    * @ Param string $ type error type db, system
    * @ Param string $ errorMsg
    * @ Param string $ phpMsg
    */
    Public static function showError ($ type, $ errorMsg, $ phpMsg = ''){
    Global $ _ G;

    $ ErrorMsg = str_replace (SITE_PATH, '', $ errorMsg );
    Ob_end_clean ();
    $ Host = $ _ SERVER ['http _ host'];
    $ Title = $ type = 'DB '? 'Database': 'system ';
    Echo <


    $ Host-$ title Error






    $ Title Error

    $ ErrorMsg


    EOT;
    If (! Empty ($ phpMsg )){
    Echo'

    ';
    Echo'

    PHP Debug

    ';
    Echo'














    ';If (is_array ($ phpMsg )){Echo' ';Foreach ($ phpMsg as $ k => $ msg ){$ K ++;Echo' ';Echo' ';Echo' ';Echo' ';Echo' ';Echo' ';}} Else {Echo' ';}Echo'
    No. File Line Code
    '. $ K .''. $ Msg ['file'].''. $ Msg ['line'].''. $ Msg ['function'].'
      '. $ PhpMsg .'

    ';
    }
    Echo <




    EOT;
    Exit ();
    }
    }

    /**
    * DB exception class
    *
    * @ Author blog.snsgou.com
    */
    Class DbException extends Exception {

    Protected $ SQL;
    Protected $ dbConfig; // Current database configuration information

    Public function _ construct ($ message, $ code = 0, $ SQL = '', $ dbConfig = array ()){
    $ This-> SQL = $ SQL;
    $ This-> dbConfig = $ dbConfig;
    Parent: :__ construct ($ message, $ code );
    }

    Public function getSql (){
    Return $ this-> SQL;
    }

    Public function getDbConfig (){
    Return $ this-> dbConfig;
    }
    }

    Second, the implementation code is as follows :? Php // set_exception_handler ('handle _ exception'); // set_error_handler...

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