 PHP3 ¤â¥U
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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. |
| 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 . |
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Example 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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