error_log PHP 3.0

bool error_log(string message, int message_type[, string destination][, string extra_headers])

 

Sends an error message somewhere.

error_reporting PHP 3.0

int error_reporting(int new_error_level=null)

 

Returns the current error_reporting level, and, if an argument was passed, changes to the new level.

restore_error_handler PHP 4.0.1

void restore_error_handler(void)

 

Restores the previously defined error handler function.

set_error_handler PHP 4.0.1

string set_error_handler(string error_handler)

 

Sets a user-defined error handler function; returns the previously defined error handler, or false on error.

trigger_error PHP 4.0.1

void trigger_error(string messsage[, int error_type])

 

Generates a user-level error/warning/notice message.