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

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...