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><A
NAME="function.mysql-connect"
>mysql_connect</A
></H1
><DIV
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><A
NAME="AEN18476"
></A
>mysql_connect -- Open a connection to a MySQL Server</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN18479"
></A
><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
><P
></P
><CODE
CLASS="FUNCDEF"
>int mysql_connect</CODE
>(string
[<SPAN
CLASS="optional"
>hostname
[<SPAN
CLASS="optional"
>:port</SPAN
>]
[<SPAN
CLASS="optional"
>:/path/to/socket</SPAN
>]
</SPAN
>]
, string
[<SPAN
CLASS="optional"
>username</SPAN
>]
, string
[<SPAN
CLASS="optional"
>password</SPAN
>]
);<P
></P
></DIV
><P
>
Returns: A positive MySQL link identifier on success, or an error
message on failure.
</P
><P
>
<B
CLASS="function"
>mysql_connect()</B
> establishes a connection to a
MySQL server. All of the arguments are optional, and if they're
missing, defaults are assumed ('localhost', user name of the user
that owns the server process, empty password).
</P
><P
> The hostname string can also include a port
number. eg. "hostname:port" or a path to a socket
eg. ":/path/to/socket" for the localhost.
<DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
Support for ":port" was added in PHP 3.0B4.
</P
><P
> Support for the ":/path/to/socket" was added in
PHP 3.0.10.
</P
><P
> You can suppress the error message on failure by prepending '@'
to the function name.
</P
></BLOCKQUOTE
></DIV
>
</P
><P
> In case a second call is made to
<B
CLASS="function"
>mysql_connect()</B
> with the same arguments, no
new link will be established, but instead, the link identifier of
the already opened link will be returned.
</P
><P
> The link to the server will be closed as soon as the execution of
the script ends, unless it's closed earlier by explicitly calling
<A
HREF="function.mysql-close.html"
><B
CLASS="function"
>mysql_close()</B
></A
>.
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><B
>Example 1. MySQL connect example</B
></P
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><TD
><PRE
CLASS="programlisting"
> 1
2 <?php
3 $link = mysql_connect ("kraemer", "marliesle", "secret") {
4 or die ("Could not connect");
5 }
6 print ("Connected successfully");
7 mysql_close ($link);
8 ?>
9 </PRE
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><P
> See also
<A
HREF="function.mysql-pconnect.html"
><B
CLASS="function"
>mysql_pconnect()</B
></A
>, and
<A
HREF="function.mysql-close.html"
><B
CLASS="function"
>mysql_close()</B
></A
>.
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