error_log
(PHP 4, PHP 5)
error_log — Send an error message somewhere
Description
bool error_log
( string $message
[, int $message_type
[, string $destination
[, string $extra_headers
]]] )
Parameters
-
message
-
The error message that should be logged.
-
message_type
-
Says where the error should go. The possible message types are as
follows:
error_log() log types
| 0 |
message
is sent to PHP's system logger, using
the Operating System's system logging mechanism or a file, depending
on what the error_log
configuration directive is set to. This is the default option.
|
| 1 |
message
is sent by email to the address in
the destination
parameter. This is the only
message type where the fourth parameter,
extra_headers
is used.
|
| 2 |
No longer an option.
|
| 3 |
message
is appended to the file
destination
. A newline is not automatically
added to the end of the message
string.
|
-
destination
-
The destination. Its meaning depends on the
message_type
parameter as described above.
-
extra_headers
-
The extra headers. It's used when the message_type
parameter is set to 1.
This message type uses the same internal function as
mail() does.
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 error_log() examples
<?php
// Send notification through the server log if we can not
// connect to the database.
if (!Ora_Logon($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,
"[email protected]");
}
// another way to call error_log():
error_log("You messed up!", 3, "/var/tmp/my-errors.log");
?>
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