PHP Learning Note 34 "Logging"

<?PHPfunctionMy_error2 ($errno,$errmes)    {       Echo"Error number:".$errno; //The default time zone is Greenwich Eight time zones//settings 1. Page Setup 2. In php.ini settings       Echo"<br/>"; Date_default_timezone_set ("PRC"); Echo Date("Y-m-d g:i:s"); //$errmes Error message//3 is required, indicating append       Error_log($errmes." \ r \ n ", 3," merr.txt ");//You can also enter an absolute path    }        //changing the method of error trigger invocation    Set_error_handler("My_error2",e_user_warning);//The error level here typically includes the user        $age=700; if($age>120)    {      //trigger_error ("Input age is too large");//Error trigger [Invoke system default mode]     Trigger_error("Input age is too large",e_user_warning); }?>

PHP Learning Note 34 "Logging"