restore_error_handler(3) [php man page]

RESTORE_ERROR_HANDLER(3)						 1						  RESTORE_ERROR_HANDLER(3)

restore_error_handler - Restores the previous error handler function

SYNOPSIS

       bool restore_error_handler (void  )

DESCRIPTION

	Used  after  changing  the  error handler function using set_error_handler(3), to revert to the previous error handler (which could be the
       built-in or a user defined function).

RETURN VALUES

	This function always returns TRUE.

EXAMPLES

       Example #1

	      restore_error_handler(3) example

	       Decide if unserialize(3) caused an error, then restore the original error handler.

	      <?php
	      function unserialize_handler($errno, $errstr)
	      {
		  echo "Invalid serialized value.
";
	      }

	      $serialized = 'foo';
	      set_error_handler('unserialize_handler');
	      $original = unserialize($serialized);
	      restore_error_handler();
	      ?>

	      The above example will output:

	      Invalid serialized value.

SEE ALSO

       error_reporting(3), set_error_handler(3), restore_exception_handler(3), trigger_error(3).

PHP Documentation Group 												  RESTORE_ERROR_HANDLER(3)

TRIGGER_ERROR(3)							 1							  TRIGGER_ERROR(3)

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

SYNOPSIS

       bool trigger_error (string  $error_msg, [int  $error_type = E_USER_NOTICE])

DESCRIPTION

	Used  to  trigger  a  user error condition, it can be used in conjunction with the built-in error handler, or with a user defined function
       that has been set as the new error handler (set_error_handler(3)).

	This function is useful when you need to generate a particular response to an exception at runtime.

PARAMETERS

	      o $error_msg
		- The designated error message for this error. It's limited to 1024 bytes in length. Any additional characters beyond  1024  bytes
		will be truncated.

	      o $error_type
		- The designated error type for this error. It only works with the E_USER family of constants, and will default to E_USER_NOTICE.

RETURN VALUES

	This function returns FALSE if wrong $error_type is specified, TRUE otherwise.

EXAMPLES

       Example #1

	      trigger_error(3) example

	       See set_error_handler(3) for a more extensive example.

	      <?php
	      if ($divisor == 0) {
		  trigger_error("Cannot divide by zero", E_USER_ERROR);
	      }
	      ?>

NOTES

       Warning

	       HTML entities in $error_msg are not escaped. Use htmlentities(3) on the message if the error is to be displayed in a browser.

SEE ALSO

       error_reporting(3), set_error_handler(3), restore_error_handler(3), The error level constants.

PHP Documentation Group 													  TRIGGER_ERROR(3)