How do I get PHP errors to display

Question

I have checked my PHP ini file  php ini  and display errors is set and also error reporting is E ALL  I have restarted my Apache webserver   I have even put these lines at the top of my script  and it doesn t even catch simple parse errors  For example  I declare variables with a     and I don t close statements     But all my scripts show a blank page on these errors  but I want to actually see the errors in my browser output    error reporting E ALL   ini set  display errors   1     What is left to do

User · Answer

Report all errors except E NOTICE  error reporting E ALL  amp   E NOTICE     Display all PHP errors   error reporting E ALL    or ini set  error reporting   E ALL     Turn off all error reporting  error reporting 0

User · Answer

Set this in your index php file   ini set  display errors   1   ini set  display startup errors   1   error reporting E ALL

User · Answer

This code on top should work   error reporting E ALL     However  try to edit the code on the phone in the file   error reporting  on

User · Answer

You can do something like below   Set the below parameters in your main index file       ini set  display errors   1       ini set  display startup errors   1     Then based on your requirement you can choose which you want to show   For all errors  warnings and notices       error reporting E ALL   OR error reporting -1     For all errors       error reporting E ERROR     For all warnings       error reporting E WARNING     For all notices       error reporting E NOTICE     For more information  check here

User · Answer

In Unix CLI  it s very practical to redirect only errors to a file    script 2 gt  errors log  From your script  either use var dump   or equivalent as usual  both STDOUT and STDERR will receive the output   but to write only in the log file  fwrite STDERR   quot Debug infos n quot       Write in errors log    Then from another shell  for live changes  tail -f errors log  or simply watch cat errors log

User · Answer

Just write   error reporting -1

User · Answer

This always works for me   ini set  display errors    1    ini set  display startup errors    1    error reporting E ALL     However  this doesn t make PHP to show parse errors - the only way to show those errors is to modify your php ini with this line   display errors   on    if you don t have access to php ini  then putting this line in  htaccess might work too    php flag display errors 1

User · Answer

If it is on the command line  you can run php with -ddisplay errors 1 to override the setting in php ini   php -ddisplay errors 1 script php

User · Answer

If  despite following all of the above answers  or you can t edit your php ini file   you still can t get an error message  try making a new PHP file that enables error reporting and then include the problem file  eg   error reporting E ALL   ini set  display errors   1   require once  problem file php      Despite having everything set properly in my php ini file  this was the only way I could catch a namespace error  My exact scenario was     file1 php namespace a b  class x                file2 php namespace c d  use c d x    Dies because it s not sure which  x  class to use class x

User · Answer

This will work    lt  php      error reporting E ALL        ini set  display errors   1         gt

User · Answer

You can add your own custom error handler  which can provide extra debug information  Furthermore  you can set it up to send you the information via email   function ERR HANDLER  errno   errstr   errfile   errline        msg     lt b gt Something bad happened  lt  b gt    errno   errstr  lt br gt  lt br gt       lt b gt File  lt  b gt   errfile  lt br gt       lt b gt Line  lt  b gt   errline  lt br gt       lt pre gt   json encode debug backtrace    JSON PRETTY PRINT    lt  pre gt   lt br gt         echo  msg       return false     function EXC HANDLER  exception       ERR HANDLER 0   exception- gt getMessage     exception- gt getFile     exception- gt getLine        function shutDownFunction          error   error get last        if   error  type      1            ERR HANDLER  error  type     error  message     error  file     error  line              set error handler   ERR HANDLER   E ALL  amp   E NOTICE  amp   E STRICT  amp   E DEPRECATED   register shutdown function  shutdownFunction    set exception handler  EXC HANDLER

User · Answer

error reporting 1        ini set  display errors    1         ini set  display startup errors    1         error reporting E ALL    Put this at the top of your page

User · Answer

As we are now running PHP 7  answers given here are not correct any more  The only one still OK is the one from Frank Forte  as he talks about PHP nbsp 7   On the other side  rather than trying to catch errors with a try catch you can use a trick  use include   Here three pieces of code   File  tst1 php   lt  php     error reporting E ALL       ini set  display errors    On           Missing   and       echo  Testing   gt    Running this in PHP nbsp 7 will show nothing   Now  try this   File  tst2 php   lt  php     error reporting E ALL       ini set  display errors    On        include   tst3 php      gt    File  tst3 php   lt  php        Missing   and       echo  Testing   gt    Now run tst2 which sets the error reporting  and then include tst3  You will see      Parse error  syntax error  unexpected end of file  expecting variable  T VARIABLE  or     T DOLLAR OPEN CURLY BRACES  or     T CURLY OPEN  in tst3 php on line 4

User · Answer

You can show Php error in your display via simple ways  Firstly  just put this below code in your php ini file  display errors   on    if you don t have access to php ini  then putting this line in  htaccess might work too   php flag display errors 1  OR you can also use the following code in your index php file ini set  display errors   1   ini set  display startup errors   1   error reporting E ALL

User · Answer

If you have Xdebug installed you can override every setting by setting   xdebug force display errors   1  xdebug force error reporting   -1       force display errors      Type  int  Default value  0  Introduced in Xdebug    2 3 If this   setting is set to 1 then errors will always be displayed  no matter   what the setting of PHP s display errors is       force error reporting      Type  int  Default value  0  Introduced in Xdebug    2 3   This setting is a bitmask  like error reporting  This bitmask will be logically ORed with the bitmask represented by error reporting to dermine which errors should be displayed  This setting can only be made in php ini and allows you to force certain errors from being shown no matter what an application does with ini set

User · Answer

Create a file called php ini in the folder where your PHP file resides   Inside php ini add the following code  I am giving an simple error showing code    display errors   on  display startup errors   on

User · Answer

Some web hosting providers allow you to change PHP parameters in the  htaccess file   You can add the following line   php value display errors 1   I had the same issue as yours and this solution fixed it

User · Answer

You can do this by changing the  php ini file and add the following   display errors   on display startup errors   on   OR you can also use the following code as this always works for me  ini set  display errors   1   ini set  display startup errors   1   error reporting E ALL

User · Answer

I would usually go with the following code in my plain PHP projects   if  defined  ENVIRONMENT         define  ENVIRONMENT    DEVELOPMENT        base url   null   if  defined  ENVIRONMENT          switch  ENVIRONMENT                case  DEVELOPMENT                base url    http   localhost product                ini set  display errors   1               ini set  display startup errors   1               error reporting E ALL E STRICT               break           case  PRODUCTION                base url    Production URL      https   google com                error reporting 0                  Mechanism to log errors                break           default              exit  The application environment is not set correctly

User · Answer

Inside your php ini   display errors   on   Then restart your web server

User · Answer

You might find all of the settings for  error reporting  or  display errors  do not appear to work in PHP nbsp 7  That is because error handling has changed  Try this instead   try          Your code    catch Error  e         trace    e- gt getTrace        echo  e- gt getMessage     in    e- gt getFile     on line    e- gt getLine     called from    trace 0   file     on line    trace 0   line        Or  to catch exceptions and errors in one go  this is not backward compatible with PHP nbsp 5    try          Your code    catch Throwable  e         trace    e- gt getTrace        echo  e- gt getMessage     in    e- gt getFile     on line    e- gt getLine     called from    trace 0   file     on line    trace 0   line

User · Answer

lt  php        Turn off error reporting     error reporting 0           Report runtime errors     error reporting E ERROR   E WARNING   E PARSE           Report all errors     error reporting E ALL           Same as error reporting E ALL       ini set  error reporting   E ALL           Report all errors except E NOTICE     error reporting E ALL  amp   E NOTICE         gt    While your site is live  the php ini file should have display errors disabled for security reasons  However  for the development environment  display errors can be enabled for troubleshooting

User · Answer

The best easy fast solution that you can use if it s a quick debugging  is to surround your code with catching exceptions  That s what I m doing when I want to check something fast in production   try          Page code   catch  Exception  e        echo  Caught exception       e- gt getMessage      n

User · Answer

You can t catch parse errors when enabling error output at runtime  because it parses the file before actually executing anything  and since it encounters an error during this  it won t execute anything   You ll need to change the actual server configuration so that display errors is on and the approriate error reporting level is used  If you don t have access to php ini  you may be able to use  htaccess or similar  depending on the server   This question may provide additional info

User · Answer

If you somehow find yourself in a situation where you can t modifiy the setting via php ini or  htaccess you re out of luck for displaying errors when your PHP scripts contain parse errors  You d then have to resolve to linting the files on the command line like this   find   -name    php  -type f -print0   xargs -0 -n1 -P8 php -l   grep -v  No syntax errors    If your host is so locked down that it does not allow changing the value via php ini or  htaccess  it may also disallow changing the value via ini set  You can check that with the following PHP script    lt  php if   ini set   display errors   1         echo  display errors cannot be set      else     echo  changing display errors via script is possible

User · Answer

Use   ini set  display errors   1   ini set  display startup errors   1   error reporting E ALL     This is the best way to write it  but a syntax error gives blank output  so use the console to check for syntax errors  The best way to debug PHP code is to use the console  run the following   php -l phpfilename php

User · Answer

To display all errors you need to   1  Have these lines in the PHP script you re calling from the browser  typically index php    error reporting E ALL   ini set  display errors    1      2  a  Make sure that this script has no syntax errors     or     2  b  Set display errors   On in your php ini  Otherwise  it can t even run those 2 lines   You can check for syntax errors in your script by running  at the command line    php -l index php   If you include the script from another PHP script then it will display syntax errors in the included script   For example   index php  error reporting E ALL   ini set  display errors    1        Any syntax errors here will result in a blank screen in the browser  include  my script php     my script php  adjfkj    This syntax error will be displayed in the browser

User · Answer

You might want to use this code   ini set  display errors   1   ini set  display startup errors   1   error reporting E ALL

[php] How do I get PHP errors to display?

Examples related to php

Examples related to error-handling

Examples related to syntax-error

Examples related to error-reporting