Req #77981 [Opn->Wfx]: "Undefined offset" notice must include name of variable in ERROR LOG message

Edit report at https://bugs.php.net/bug.php?id=77981&edit=1 ID: 77981 Updated by: cmb@php.net Reported by: forkik at gmail dot com Summary: "Undefined offset" notice must include name of variable in ERROR LOG message -Status: Open +Status: Wont fix Type: Feature/Change Request Package: *General Issues PHP Version: Irrelevant -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: There is no guarantee that there is a variable name involded, e.g. timezone_identifiers_list()[42]. And actually, the notice is about a *value*, not a *variable*. If you still think this should be improved, please pursue the RFC process[1]. [1] <https://wiki.php.net/rfc/howto> Previous Comments: ------------------------------------------------------------------------ [2019-05-09 13:01:17] forkik at gmail dot com Comprehensive ------------------------------------------------------------------------ [2019-05-07 11:33:23] forkik at gmail dot com Description: ------------ Very important to know (from log) and to log in which variable (name of the variable) error like "NOTICE (Undefined offset: 1)" occurred! Still it is NOT POSSIBLE! This is important when one of these situations occur (the more situations occurred the more difficult to detect the exact variable (name)): 1. code changes rapidly (so error line can even mislead without variable name); 2. variables data is from database (and database changes rapidly in big database so it is impossible to detect in which variable name); 3. there are multiple variables in the same line. Test script: --------------- <?php $A = [1 => '']; $B = [1 => '']; $X_variable_name = []; set_error_handler('log_handler'); function log_handler ( $errno, $errstr, $errfile, $errline, $errcontext ) { $bt = debug_backtrace(); //print_r($bt); $bt0 = (isset($bt[0]) && isset($bt[0]['file']) ? basename(dirname($bt[0]['file'])).'/'.basename($bt[0]['file']).':'.$bt[0]['line'] : ''); $bt1 = (isset($bt[1]) ? basename(dirname($bt[1]['file'])).'/'.basename($bt[1]['file']).':'.$bt[1]['line'] : ''); $bt2 = (isset($bt[2]) ? basename(dirname($bt[2]['file'])).'/'.basename($bt[2]['file']).':'.$bt[2]['line'] : ''); $errorType = [E_ERROR => 'ERROR',E_WARNING => 'WARNING',E_PARSE => 'PARSING ERROR',E_NOTICE => 'NOTICE',E_CORE_ERROR => 'CORE ERROR',E_CORE_WARNING => 'CORE WARNING',E_COMPILE_ERROR => 'COMPILE ERROR',E_COMPILE_WARNING => 'COMPILE WARNING',E_USER_ERROR => 'USER ERROR',E_USER_WARNING => 'USER WARNING',E_USER_NOTICE => 'USER NOTICE',E_STRICT => 'STRICT NOTICE',E_RECOVERABLE_ERROR => 'RECOVERABLE ERROR']; echo date("y-m-d H:i:s").' '.$errorType[$errno]." ($errstr) ".$errfile.":$errline "./*print_r($errcontext, true).*/' '.$bt0.' 1:'.$bt1.' 2:'.$bt2."\n"; //debug_print_backtrace(); } echo $A[1].$B[1].$X_variable_name[1]; Expected result: ---------------- 19-05-07 14:07:06 NOTICE (Undefined offset: 1 in variable: X_variable_name) /home/tests/php/error_log.php:65 php/error_log.php:65 1: 2: Actual result: -------------- 19-05-07 14:07:06 NOTICE (Undefined offset: 1) /home/tests/php/error_log.php:65 php/error_log.php:65 1: 2: ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77981&edit=1