Compzone.Org :: Podręcznik PHP :: error_log

Podręcznik PHP
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error_log

(PHP 3, PHP 4, PHP 5)

error_log -- Send an error message somewhere

Opis

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

Sends an error message to the web server's error log, a TCP port or to a file.

Parametry

message

The error message that should be logged.

message_type

Says where the error should go. The possible message types are as follows:

Tabela 1. error_log() log types

0	`message` is sent to PHP's system logger, using the Operating System's system logging mechanism or a file, depending on what the error_log configuration directive is set to. This is the default option.
1	`message` is sent by email to the address in the `destination` parameter. This is the only message type where the fourth parameter, `extra_headers` is used.
2	`message` is sent through the PHP debugging connection. This option is only available if remote debugging has been enabled. In this case, the `destination` parameter specifies the host name or IP address and optionally, port number, of the socket receiving the debug information. This option is only available in PHP 3.
3	`message` is appended to the file `destination`. A newline is not automatically added to the end of the `message` string.

destination

The destination. Its meaning depends on the message parameter as described above.

extra_headers

The extra headers. It's used when the message parameter is set to 1. This message type uses the same internal function as mail() does.

Zwracane wartości

Zwraca TRUE w przypadku sukcesu, FALSE w przypadku porażki.

Przykłady

Przykład 1. error_log() examples

<?php
// Send notification through the server log if we can not


                // connect to the database.
if (!Ora_Logon($username, $password)) {


                    error_log("Oracle database not available!", 0);


                }

                
// Notify administrator by email if we run out of FOO

                if (!($foo = allocate_new_foo())) {


                    error_log("Big trouble, we're all out of FOOs!", 1,


                               "operator@example.com");


                }

                
// other ways of calling error_log():

                error_log("You messed up!", 2, "127.0.0.1:7000");

                error_log("You messed up!", 2, "loghost");

                error_log("You messed up!", 3, "/var/tmp/my-errors.log");

                ?>

Poprzedni	Spis treści	Następny
debug_print_backtrace	Początek rozdziału	error_reporting