What are the reasons why PHP would echo errors, even with error_reporting(0)?

Question

What are some reasons why PHP would force errors to show, no matter what you tell it to disable?

I have tried

error_reporting(0);
ini_set('display_errors', 0); 

with no luck.

Answer 1

Note the caveat in the manual at http://uk.php.net/error_reporting:

Most of E_STRICT errors are evaluated at the compile time thus such errors are not reported in the file where error_reporting is enhanced to include E_STRICT errors (and vice versa).

If your underlying system is configured to report E_STRICT errors, these may be output before your code is even considered. Don't forget, error_reporting/ini_set are runtime evaluations, and anything performed in a "before-run" phase will not see their effects.

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Based on your comment that your error is...

Parse error: syntax error, unexpected T_VARIABLE, expecting ',' or ';' in /usr/home/REDACTED/public_html/dev.php on line 11

Then the same general concept applies. Your code is never run, as it is syntactically invalid (you forgot a ';'). Therefore, your change of error reporting is never encountered.

Fixing this requires a change of the system level error reporting. For example, on Apache you may be able to place...

php_value error_reporting 0

in a .htaccess file to suppress them all, but this is system configuration dependent.

Pragmatically, don't write files with syntax errors :)

Answer 2

To prevent errors from displaying you can

• Write in a .htaccess: php_flag display_errors 0
• Split your code in separate modules where the main (parent) PHP file only sets the error_logging and then include() the other files.

Answer 3

Use phpinfo to find the loaded php.ini and edit it to hide errors. It overrides what you put in your script.

Answer 4

Is set_error_handler() used anywhere in your script? This overrides error_reporting(0).

Answer 5

Pragmatically, don't write files with syntax errors :)

To ensure there's no syntax errors in your file, run the following:

php -l YOUR_FILE_HERE.php

This will output something like this:

PHP Parse error:  syntax error, unexpected '}' in Connection.class.php on line 31

Answer 6

Just add the below code in your index.php file:

ini_set('display_errors', False);

Answer 7

Use log_errors for them to be logged instead of displayed.

Answer 8

If the setting is specified in Apache using php_admin_value, it can't be changed in .htaccess or at runtime.

See: How to change configuration settings