Eval Error Handling Php
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them; it only takes a minute: Sign up how to handle parse error for eval function in php up vote 0 down vote favorite I'm trying to use the eval function for php. but I'm stuck in handling the parse error. like considering if I have edge cases like 1.. or 1++ if gives me parse error:syntax error, ..... anyone
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knows how to handle syntax error or how to bypass the error message? I want to give a better error message. also is it possible to store the error message to a variable? TIA php error-handling syntax-error share|improve this question edited Jun 14 '12 at 14:26 hakre 134k26216387 asked Apr 10 '12 at 8:13 ordinaryman09 82311021 2 Why the hell do you use eval on code that was apparently not written by you? –ThiefMaster♦ Apr 10 '12 at 8:14 There has to be a better way than using eval on server side, or even client side for that matter... –Ryan Apr 10 '12 at 8:15 well, this is the project specs, and wont be used for real-world purposes. –ordinaryman09 Apr 10 '12 at 8:31 add a comment| 3 Answers 3 active oldest votes up vote 6 down vote $response = @eval($string); if (error_get_last()){ echo 'Show your custom error message'; //Or you can print_r(error_get_last()); } share|improve this answer answered Nov 16 '13 at 23:35 Nanhe Kumar 5,04712430 1 Only after lik
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Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community php fatal error uncaught exception of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Is there any way to catch fatal error using eval()? up vote 1 down vote favorite $code http://stackoverflow.com/questions/10085284/how-to-handle-parse-error-for-eval-function-in-php = 'php statement'; // getting perse error function perse_error_check($code){ if(eval($code) === "true"){ return "no perse error"; } if(eval($code) === "false"){ return "perse error found"; } } // getting fatal error function fatal_error_check($code){ ....................................... ....................................... } Can you help me to complete the second function? Actually I am not sure weather it is possible or not. php share|improve this question edited Jan 25 '15 at 21:11 asked Jan 25 '15 at 20:47 http://stackoverflow.com/questions/28141295/is-there-any-way-to-catch-fatal-error-using-eval Asif Iqbal 393314 3 One of the biggest problems with using eval() (after the security risks) is that you can't do any error handling with it –Mark Baker Jan 25 '15 at 20:47 1 Very simple just don't use it! Never use evil() –Rizier123 Jan 25 '15 at 20:48 Yikes. Sounds like an XY problem. What are you trying to do that you thought eval was the solution? Chances are there is a better (and definitely a safer) way. –Brad Christie Jan 25 '15 at 20:48 $code won't be expanded for evaluation at all if it is single-quoted when passed to eval() –Michael Berkowski Jan 25 '15 at 20:49 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote accepted There is a simple way. Put your PHP code in an another file. For an example: index.php and check.php . Put your PHP code in check.php. Now in index.php write: $check_data = file_get_contents("yourhosturl/allotherdirectory/check.php"); if(preg_match("/Fatal error/",$check_data)){ echo "fatal error found"; } share|improve this answer edited Jan 25 '15 at 20:56 George Cummins 20.4k63879 answered Jan 25 '15 at 20:54 Asif Iqbal 81129 Be VERY careful. If $code has anything malicious, you're now giving full-on access to file system, database, etc. using t
15:30 UTC Modified: 2013-10-27 15:42 UTC Votes:11 Avg. Score:4.8 ± 0.4 Reproduced:11 of 11 (100.0%) Same Version:3 (27.3%) Same OS:3 (27.3%) From: sbarnum https://bugs.php.net/bug.php?id=13993 at pointsystems dot com Assigned: krakjoe Status: Closed Package: Scripting Engine problem PHP Version: * OS: * Private report: No CVE-ID: View Add Comment Developer Edit [2001-11-08 15:30 UTC] http://grokbase.com/t/php/php-general/078mrrrma9/php-eval-fatal-error sbarnum at pointsystems dot com I'm trying to validate some dynamically generated PHP code using eval() set_error_handler('eval_error'); eval($php_code); restore_error_handler(); problem: if $php_code contains a parse error, the error is error handling not reported using the eval_error() function, but uses the generic error handler. Patches Add a PatchPull Requests Add a Pull RequestHistoryAllCommentsChangesGit/SVN commitsRelated reports [2002-04-10 21:11 UTC] ben at qubed dot co dot nz I have the same problem - would be a very nice feature to be able to catch errors in eval statements. [2002-06-12 16:58 UTC] jukkaho at eval error handling mail dot student dot oulu dot fi I share your problem and I think I have solved it (for 4.2.1 tree). My bad english explanation with a patch can be found at http://bugs.php.net/bug.php?id=17731 Try it out and report any problems it can cause. Maybe we can get the fix in. [2003-07-10 20:13 UTC] brad at info-link dot net Any chance this might be changed? I'd like to catch the "call to undefined function" error without the script dying... Unless there is some other way to verify that a bit of php code is syntactically valid during script execution? The tokenizer exension doesn't seem to care about how the tokens are ordered... [2011-01-01 00:08 UTC] jani@php.net -Package: Feature/Change Request +Package: Scripting Engine problem -Operating System: Redhat Linux 7.1 +Operating System: * -PHP Version: 4.0.6 +PHP Version: * [2011-01-01 00:09 UTC] jani@php.net -Summary: eval() parse errors not using error_handler +Summary: Allow catching parse errors in eval() with user defined error handler [2013-10-27 15:42 UTC] krakjoe@php.net -Status: Open +Status: Closed -Assigned To: +Assigned To: krakjoe [2013-10-27
using eval(). The code I'm trying to compile raises an E_ERROR (Fatal).Here's a simple example:Now, I'd like to catch the error made by eval:// ...try {eval($code);} catch (Exception $ex) {var_dump($ex);}// ...Problem persists: a fatal error occurs.Using set_error_handler() and set_exception_handler() is not workingeither...Is there any way to gracefully catch this error?Regards,Maarten reply Tweet Search Discussions Search All Groups PHP php-general 5 responses Oldest Nested Stut Fatal errors are exactly that... fatal. You cannot catch them or recover from them. Your best option is to shell out another PHP process, capture the output and parse that for error messages. -Stut -- http://stut.net/ Stut at Aug 20, 2007 at 2:07 pm ⇧ Maarten Balliauw wrote:Here's the thing: I'm trying to do some dynamic code compilation withinPHP using eval(). The code I'm trying to compile raises an E_ERROR (Fatal).Here's a simple example:Now, I'd like to catch the error made by eval:// ...try {eval($code);} catch (Exception $ex) {var_dump($ex);}// ...Problem persists: a fatal error occurs.Using set_error_handler() and set_exception_handler() is not workingeither...Is there any way to gracefully catch this error?Fatal errors are exactly that... fatal. You cannot catch them or recoverfrom them.Your best option is to shell out another PHP process, capture the outputand parse that for error messages.-Stut--http://stut.net/ reply | permalink M. Sokolewicz If you read the manual (RTFM) at http://www.php.net/eval you'll notice the following: " If there is a parse error in the evaluated code, eval() returns FALSE and execution of the following code continues normally. It is not possible to catch a parse error in eval() using set_error_handler(). Note: In case of a fatal error in the evaluated code, the whole script exits. " So, no. M. Sokolewicz at Aug 20, 2007 at 2:12 pm ⇧ Maarten Balliauw wrote:Here's the thing: I'm trying to do some dynamic code compilation withinPHP using eval(). The code I'm trying to compile raises an E_ERROR (Fatal).Here's a simple exam