Apache Verbose Error Reporting
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Php.ini Error Reporting
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Php Display_errors
them; it only takes a minute: Sign up How to get useful error messages in PHP? up vote 364 down vote favorite 162 I find programming in PHP quite frustrating. Quite often I will try and run the script php error and just get a blank screen back. No error message, just empty screen. The cause might have been a simple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely. It is very difficult to figure out what went wrong. I end up commenting out code, entering "echo" statements everywhere, etc. trying to narrow down the problem. But there surely must be a better way, right?. So, is there a way to get PHP php debug log to produce useful error message like Java does? Can anyone recommend good PHP debugging tips, tools and techniques? php debugging error-handling share|improve this question edited May 11 '13 at 23:52 hkBattousai 3,63683982 asked May 10 '09 at 9:48 Candidasa 2,92982330 coding.smashingmagazine.com/2011/11/30/… –Alex Jul 15 '12 at 14:54 1 Also see stackoverflow.com/q/1475297/632951 –Pacerier Oct 14 '14 at 9:37 @JuannStrauss, That's understating it. And when you finally see the errors, it says T_PAAMAYIM_NEKUDOTAYIM. Or maybe "must be an instance of integer, integer given". –Pacerier Apr 3 '15 at 20:02 Tutorial on this: code2real.blogspot.com/2015/06/… –Pupil Sep 9 '15 at 7:21 add a comment| 27 Answers 27 active oldest votes up vote 347 down vote accepted For syntax errors, you need to enable error display in the php.ini. By default these are turned off because you don't want a "customer" seeing the error messages. Check this page in the PHP documentation for information on the 2 directives: error_reporting and display_errors. display_errors is probably the one you want to change. If you can't modify the php.ini, you can also add the following lines to an .htaccess file: php_flag display_errors on php_value error_reporting 2039 You may want to consider using the value of E_ALL (as mentioned by Gumbo) for your version of PHP for error_reporting to get all of the errors. more info 3 other items: (1) You can check the error lo
Debug errors 6.3 Exception handling 6.4 Functional return values 7 Detailed error messages 7.1 How to determine if you
Php Error Logging
are vulnerable 7.2 How to protect yourself 8 Logging 8.1 Where php xdebug to log to? 8.2 Handling 8.3 General Debugging 8.4 Forensics evidence 8.5 Attack detection 8.6 Quality
Php Error Handling
of service 8.7 Proof of validity 8.8 Logging types 9 Noise 9.1 How to protect yourself 10 Cover Tracks 10.1 How to protect yourself 11 False Alarms http://stackoverflow.com/questions/845021/how-to-get-useful-error-messages-in-php 11.1 How to protect yourself 11.2 Denial of Service 11.3 How to protect yourself 12 Destruction 12.1 How to protect yourself 13 Audit Trails 13.1 How to determine if you are vulnerable 13.2 How to protect yourself 14 Further Reading 15 Error Handling and Logging Objective Many industries are required by legal and regulatory requirements https://www.owasp.org/index.php/Error_Handling,_Auditing_and_Logging to be: Auditable – all activities that affect user state or balances are formally tracked Traceable – it’s possible to determine where an activity occurs in all tiers of the application High integrity – logs cannot be overwritten or tampered with by local or remote users Well-written applications will dual-purpose logs and activity traces for audit and monitoring, and make it easy to track a transaction without excessive effort or access to the system. They should possess the ability to easily track or identify potential fraud or anomalies end-to-end. Environments Affected All. Relevant COBIT Topics DS11 – Manage Data – All sections should be reviewed, but in particular: DS11.4 Source data error handling DS11.8 Data input error handling Description Error handling, debug messages, auditing and logging are different aspects of the same topic: how to track events within an application: Best practices Fail safe – do not fail open Dual purpose logs Audit logs are legally protected – protect them Reports and
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