If it's not already done in php.ini, error reporting can be set dynamically and should be set to allow most errors to be shown:
int error_reporting ([ int $level ] )
// should always be used prior to 5.4 error_reporting(E_ALL); // -1 will show every possible error, even when new levels and constants are added // in future PHP versions. E_ALL does the same up to 5.4. error_reporting(-1); // without notices error_reporting(E_ALL & ~E_NOTICE); // only warnings and notices. // for the sake of example, one shouldn't report only those error_reporting(E_WARNING | E_NOTICE);
errors will be logged by default by php, normally in a error.log file at the same level than the running script.
in development environment, one can also show them on screen:
in production however, one should
and show a friendly problem message through the use of an Exception or Error handler.