Php error log () function

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(PHP 3, PHP 4 , PHP 5)

error_log -- Send an error message somewhere

Syntax

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:

Table 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. This message type uses the same internal function as mail() does.
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.
3	`message` is appended to the file `destination`.

Note: When explicitly specifying the message_type as 3, a newline is not automatically added to the end of the message string.

Warning

Remote debugging via TCP/IP is a PHP 3 feature that is not available in PHP 4.

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,
               "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");
?>

Php error log Function syntax tag

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Php error log syntax tutorial

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