error_log
(PHP3 , PHP4)
error_log --- &HTTP://www.aliyun.com/zixun/aggregation/37954.html">nbsp;送出錯誤訊息到某處
語法 : int error_log (string message, int message_type [, string destination [, string extra_headers]])
說明 :
送出一個錯誤訊息到web伺服器的錯誤記錄，一個TCP埠號或是一個檔。 第一個參數message是將要被記錄的一個錯誤訊息內容，第二個參數message_type說明訊息要送往何處 :
error_log( )記錄的型態 :
0 message送到PHP的系統記錄者，使用作業系統的系統記錄機制或是檔，取決於error_log的設定值。 1 以email的方式將message送到參數destination指定的位址，只有這個型態才會使用到extra_headers，此型態使用相同的內建函式mail( )。 2 message送到PHP除錯連結，只有在遠端的除錯設為enable時，這個選項才有效。 參數destination用來指定接收除錯訊息的主機名稱稱或是IP位址，埠號。 3 message附加在檔destination。Example :
<?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@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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