Deprecated deprecated, there may be vulnerabilities that may be inefficient, future versions not supported, etc.
Notice notification-level errors
Warning warns this needs to see if the code is out of the question. Above three programs still continue to execute down
Fatal error fatal bug program stops executing
Parse error parsing errors directly hangs the program to stop execution
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E_user level error, user-defined error; like, I trigger Trigger_error () a e_user_error level error, which is equivalent to the error of PHP itself
By the way here, find a way to php.ini, print out phpinfo ();
Even if it is not here, you have to put it here!
The program writes non-php.ini.
error_reporting (0); Do not display errors
Error_reporting (-1); Show All Errors
Show: Ini_set (' display_errors ', ' on ');
Error level for PHP