Sophie: php-manual-ro-0:20051028-1 noarch

php-manual-ro-20051028-1.noarch.rpm

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><H1
><A
NAME="function.fsockopen"
></A
>fsockopen</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN74057"
></A
><P
>    (PHP 3, PHP 4 , PHP 5)</P
>fsockopen&nbsp;--&nbsp;
     Open Internet or Unix domain socket connection
    </DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN74060"
></A
><H2
>Description</H2
>resource <B
CLASS="methodname"
>fsockopen</B
> ( string target, int port [, int errno [, string errstr [, float timeout]]])<BR
></BR
><P
>&#13;     Initiates a socket connection to the resource specified by
     <VAR
CLASS="parameter"
>target</VAR
>.  <VAR
CLASS="literal"
>PHP</VAR
> supports
     targets in the Internet and Unix domains as described in
     <A
HREF="transports.html"
>Anexa N</A
>.  A list of supported transports
     can also be retrieved using <A
HREF="function.stream-get-transports.html"
><B
CLASS="function"
>stream_get_transports()</B
></A
>.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
      If you need to set a timeout for reading/writing data over the socket,
      use <A
HREF="function.stream-set-timeout.html"
><B
CLASS="function"
>stream_set_timeout()</B
></A
>, as the <VAR
CLASS="parameter"
>timeout</VAR
>
      parameter to <B
CLASS="function"
>fsockopen()</B
> only applies while
      connecting the socket.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     As of PHP 4.3.0, if you have compiled in OpenSSL support, you may
     prefix the <VAR
CLASS="parameter"
>hostname</VAR
> with either
     '<VAR
CLASS="literal"
>ssl://</VAR
>' or '<VAR
CLASS="literal"
>tls://</VAR
>' to
     use an SSL or TLS client connection over TCP/IP to connect
     to the remote host.
    </P
><P
>&#13;     <B
CLASS="function"
>fsockopen()</B
> returns a file pointer which may
     be used together with the other file functions (such as
     <A
HREF="function.fgets.html"
><B
CLASS="function"
>fgets()</B
></A
>, <A
HREF="function.fgetss.html"
><B
CLASS="function"
>fgetss()</B
></A
>,
     <A
HREF="function.fwrite.html"
><B
CLASS="function"
>fwrite()</B
></A
>, <A
HREF="function.fclose.html"
><B
CLASS="function"
>fclose()</B
></A
>, and
     <A
HREF="function.feof.html"
><B
CLASS="function"
>feof()</B
></A
>).
    </P
><P
>&#13;     If the call fails, it will return <TT
CLASS="constant"
><B
>FALSE</B
></TT
> and if the optional
     <VAR
CLASS="parameter"
>errno</VAR
> and <VAR
CLASS="parameter"
>errstr</VAR
>
     arguments are present they will be set to indicate the actual
     system level error that occurred in the system-level
     <VAR
CLASS="literal"
>connect()</VAR
> call. If the value returned in
     <VAR
CLASS="parameter"
>errno</VAR
> is <VAR
CLASS="literal"
>0</VAR
> and the
     function returned <TT
CLASS="constant"
><B
>FALSE</B
></TT
>, it is an indication that the error
     occurred before the <VAR
CLASS="literal"
>connect()</VAR
> call. This is
     most likely due to a problem initializing the socket. Note that
     the <VAR
CLASS="parameter"
>errno</VAR
> and
     <VAR
CLASS="parameter"
>errstr</VAR
> arguments will always be passed by
     reference.
    </P
><P
>&#13;     Depending on the environment, the Unix domain or the optional
     connect timeout may not be available.
    </P
><P
>&#13;     The socket will by default be opened in blocking mode.  You can
     switch it to non-blocking mode by using
     <A
HREF="function.stream-set-blocking.html"
><B
CLASS="function"
>stream_set_blocking()</B
></A
>.
     <TABLE
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BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN74115"
></A
><P
><B
>Exemplu 1. <B
CLASS="function"
>fsockopen()</B
> Example</B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$fp </font><font color="#007700">= </font><font color="#0000BB">fsockopen</font><font color="#007700">(</font><font color="#DD0000">"www.example.com"</font><font color="#007700">, </font><font color="#0000BB">80</font><font color="#007700">, </font><font color="#0000BB">$errno</font><font color="#007700">, </font><font color="#0000BB">$errstr</font><font color="#007700">, </font><font color="#0000BB">30</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$fp</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"$errstr ($errno)&lt;br /&gt;</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$out </font><font color="#007700">= </font><font color="#DD0000">"GET / HTTP/1.1\r\n"</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$out </font><font color="#007700">.= </font><font color="#DD0000">"Host: www.example.com\r\n"</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$out </font><font color="#007700">.= </font><font color="#DD0000">"Connection: Close\r\n\r\n"</font><font color="#007700">;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#0000BB">$out</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;while (!</font><font color="#0000BB">feof</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#0000BB">fgets</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#0000BB">128</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
     The example below shows how to retrieve the day and time
     from the UDP service "daytime" (port 13) in your own machine.
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN74119"
></A
><P
><B
>Exemplu 2. Using UDP connection</B
></P
><TABLE
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$fp </font><font color="#007700">= </font><font color="#0000BB">fsockopen</font><font color="#007700">(</font><font color="#DD0000">"udp://127.0.0.1"</font><font color="#007700">, </font><font color="#0000BB">13</font><font color="#007700">, </font><font color="#0000BB">$errno</font><font color="#007700">, </font><font color="#0000BB">$errstr</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$fp</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"ERROR: $errno - $errstr&lt;br /&gt;</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#DD0000">"\n"</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#0000BB">fread</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#0000BB">26</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
     <DIV
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><P
></P
><TABLE
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><TR
><TD
ALIGN="CENTER"
><B
>Avertisment</B
></TD
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><TR
><TD
ALIGN="LEFT"
><P
>&#13;        UDP sockets will sometimes appear to have opened without an error,
        even if the remote host is unreachable.  The error will only
        become apparent when you read or write data to/from the socket.
        The reason for this is because UDP is a "connectionless" protocol,
        which means that the operating system does not try to establish
        a link for the socket until it actually needs to send or receive data.
      </P
></TD
></TR
></TABLE
></DIV
>
     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>When specifying a numerical IPv6 address
(e.g. fe80::1) you must enclose the IP in square brackets.  For example,  
<VAR
CLASS="literal"
>tcp://[fe80::1]:80</VAR
>.</P
></BLOCKQUOTE
></DIV
>
     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>The timeout parameter was introduced in PHP 3.0.9 and
      UDP support was added in PHP 4.
      </P
></BLOCKQUOTE
></DIV
>
     See also <A
HREF="function.pfsockopen.html"
><B
CLASS="function"
>pfsockopen()</B
></A
>, 
     <A
HREF="function.stream-set-blocking.html"
><B
CLASS="function"
>stream_set_blocking()</B
></A
>,
     <A
HREF="function.stream-set-timeout.html"
><B
CLASS="function"
>stream_set_timeout()</B
></A
>, <A
HREF="function.fgets.html"
><B
CLASS="function"
>fgets()</B
></A
>,
     <A
HREF="function.fgetss.html"
><B
CLASS="function"
>fgetss()</B
></A
>, <A
HREF="function.fwrite.html"
><B
CLASS="function"
>fwrite()</B
></A
>,
     <A
HREF="function.fclose.html"
><B
CLASS="function"
>fclose()</B
></A
>, <A
HREF="function.feof.html"
><B
CLASS="function"
>feof()</B
></A
>, and
     the <A
HREF="ref.curl.html"
>Curl extension</A
>.
    </P
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