Catch Php Fatal Error
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Php Catchable Fatal Error
Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: php catch warning Sign up PHP try/catch and fatal error up vote 9 down vote favorite 1 I'm using the following script to use a database using PHP: try{ $db = new PDO('mysql:host='.$host.';port='.$port.';dbname='.$db, $user, $pass, $options); } catch(Exception $e){ $GLOBALS['errors'][] = $e; } Now, I want to use this database handle to do a request using this code: try{ $query = $db->prepare("INSERT INTO users (...) VALUES php catch exception (...);"); $query->execute(array( '...' => $..., '...' => $... )); } catch(Exception $e){ $GLOBALS['errors'][] = $e; } Here is the problem: When the connection to the DB is OK, everything works, When the connection fails but I don't use the DB, I have the $GLOBALS['errors'][] array and the script is still running afterwards, When the connection to the DB has failed, I get the following fatal error: Notice: Undefined variable: db in C:\xampp\htdocs[...]\test.php on line 32 Fatal error: Call to a member function prepare() on a non-object in C:\xampp\htdocs[...]\test.php on line 32 Note: Line 32 is the $query = $db->prepare(...) instruction. That is to say, the script crashes, and the try/catch seems to be useless. Do you know why this second try/catch don't works and how to solve it? Thanks for the help! EDIT: There are some really good replies. I've validated one which is not exactly what I wanted to do, but which is probably the best approach. php try-catch fatal-error share|improve this question edited Oct 17 '12 at 7:04 asked Oct 17 '12 at 6:35 Ploppe 61117 add a comment| 5 Answers 5 a
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Php Catch Fatal Error And Continue
just like you, helping each other. Join them; it only takes a minute: Sign up Handle fatal errors in PHP using register_shutdown_function() up vote 20 down vote favorite 11 According to the comment on this answer http://stackoverflow.com/questions/12928487/php-try-catch-and-fatal-error it is possible to catch Fatal Errors through a shutdown function which cannot be caught using set_error_handler(). However, I couldn't find out how to determine if the shutdown has occured due to a fatal error or due to the script reaching its end. Additionally, the debug backtrace functions seem to be defunct in the shutdown function, making it pretty worthless for logging the stack trace where the Fatal Error occured. So my question is: http://stackoverflow.com/questions/4410632/handle-fatal-errors-in-php-using-register-shutdown-function what's the best way to react on Fatal Errors (especially undefined function calls) while keeping the ability to create a proper backtrace? php error-handling fatal-error share|improve this question asked Dec 10 '10 at 15:55 ThiefMaster♦ 187k38349462 add a comment| 3 Answers 3 active oldest votes up vote 39 down vote accepted This works for me: function shutdown() { $error = error_get_last(); if ($error['type'] === E_ERROR) { // fatal error has occured } } register_shutdown_function('shutdown'); spl_autoload_register('foo'); // throws a LogicException which is not caught, so triggers a E_ERROR However, you probably know it already, but just to make sure: you can't recover from a E_ERROR in any way. As for the backtrace, you can't... :( In most cases of a fatal error, especially Undefined function errors, you don't really need it. Pinpointing the file/line where it occured is enough. The backtrace is irrelevant in that case. share|improve this answer edited Dec 10 '10 at 16:22 answered Dec 10 '10 at 16:05 netcoder 42.6k984122 add a comment| up vote 5 down vote One way to distinguish between fatal error and proper application shutdown with the register_shutdown_function is to define a constant as the last line of your program, and then check if the constant is defined: function fatal_error() { if ( ! defined(PROGRAM_EXECUTION_SUCCESSFUL)) { // fatal error has occurred } } registe
and Objects Namespaces Errors Exceptions Generators References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed http://php.net/manual/en/language.exceptions.php as an Apache module Session Security Filesystem Security Database Security Error Reporting http://php.net/manual/en/function.set-error-handler.php Using Register Globals User Submitted Data Magic Quotes 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 Safe Mode Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats fatal error Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Credit Card Processing 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 catch php fatal Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation 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(current page) / Focus search box Extending Exceptions » « Errors in PHP 7 PHP Manual Language Reference Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Korean Romanian Russian Spanish Turkish Other Edit Report a Bug Exceptions Table of ContentsExtending Exceptions PHP 5 has an exception model similar to that of other programming languages. An exception can be thrown, and caught ("catched") within PHP. Code may be surrounded in a try block, to facilitate the catching of potential exceptions. Each try must have at least one corresponding catch or finally block. The thrown object must be an instance of the Exception class or a subclass of Exception. Trying to throw an object that is not will result in a PHP Fatal Error. catch Multiple catch blocks can be used to catch differe
and Objects Namespaces Errors Exceptions Generators References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes 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 Using Register Globals User Submitted Data Magic Quotes 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 Safe Mode 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 Credit Card Processing 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 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(current page) / Focus search box set_exception_handler » « restore_exception_handler PHP Manual Function Reference Affecting PHP's Behaviour Error Handling Error Handling Functions Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Korean Romanian Russian Spanish Turkish Other Edit Report a Bug set_error_handler (PHP 4 >= 4.0.1, PHP 5, PHP 7)set_error_handler — Sets a user-defined error handler function Description mixed set_error_handler ( callable $error_handler [, int $error_types = E_ALL | E_STRICT ] ) Sets a user function (error_handler) to handle errors in a script. This function can be used for defining your own way of handling errors during runtime, for example in applications in which you need to do cleanup of data/files when a critical error happens, or when you need to trigger an error under certain conditions (using trigger_error()). It is important to remember that the standard PHP error handler is completely bypassed for the error types specified by error_types unless the callback function returns F