Php error report enabling detailed implementation

Definition and usage: error_reporting (). set the php error level and return the current level. Syntax: error_reporting (report_level) if the level parameter is not specified, when

Definition and usage:Error_reporting (), set the php error level and return the current level.

Syntax:Error_reporting (report_level) if the level parameter is not specified, the current error level will be returned. The following items are possible values of level.

Disable all error reports: error_reporting (0 );

Only running errors are reported: error_reporting (e_error | e_warning | e_parse );

Report e_notice: error_reporting (e_error | e_warning | e_parse | e_notice );

Report all running errors except e_notice

This is the default value of php. ini: error_reporting (e_all ^ e_notice );

Report all php errors: error_reporting (e_all );

Similar to error_reporting (e_all), this setting also reports all php errors: ini_set ('error _ report', e_all );

1. Function unserialize_handler ($ errno, $ errstr) // user-defined function
2. {
3. Echo "invalid serialized value. n"; // output the specified content
4. }
5. $ Serialized = 'foo'; // define a string
6. Set_error_handler ('unserialize _ handler'); // sets the user-defined error message function.
7. $ Original = unserialize ($ serialized); // Create a php value from a stored representation
8. Restore_error_handler (); // restore error message pointer