Description
int
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. The first
parameter, message, is the
error message that should be logged. The second parameter,
message_type says where the
message should go:
表格 1. error_log() log
types
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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. |
|
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. This
message type uses the same internal function as
mail() does. |
|
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. |
|
message is appended to the
file
destination. |
警告 |
Remote debugging via TCP/IP is a PHP 3 feature
that is
not available in PHP 4.
|
範例 1. error_log()
examples
// 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@mydomain.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");
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