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><H1
><A
NAME="function.ftp-nb-get"
></A
>ftp_nb_get</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN31749"
></A
><P
> (PHP 4 >= 4.3.0, PHP 5)</P
>ftp_nb_get -- Retrieves a file from the FTP server and writes it to a local file (non-blocking)</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN31752"
></A
><H2
>Description</H2
>int <B
CLASS="methodname"
>ftp_nb_get</B
> ( resource ftp_stream, string local_file, string remote_file, int mode [, int resumepos])<BR
></BR
><P
> <B
CLASS="function"
>ftp_nb_get()</B
> retrieves <VAR
CLASS="parameter"
>remote_file</VAR
>
from the FTP server, and saves it to <VAR
CLASS="parameter"
>local_file</VAR
>
locally. The transfer <VAR
CLASS="parameter"
>mode</VAR
> specified must
be either <TT
CLASS="constant"
><B
>FTP_ASCII</B
></TT
> or
<TT
CLASS="constant"
><B
>FTP_BINARY</B
></TT
>. The difference between this function and the
<A
HREF="function.ftp-get.html"
><B
CLASS="function"
>ftp_get()</B
></A
> is that this function retrieves the file
asynchronously, so your program can perform other operations while the
file is being downloaded.
</P
><P
> Returns <TT
CLASS="constant"
><B
>FTP_FAILED</B
></TT
>, <TT
CLASS="constant"
><B
>FTP_FINISHED</B
></TT
>, or
<TT
CLASS="constant"
><B
>FTP_MOREDATA</B
></TT
>.
</P
><P
> <TABLE
WIDTH="100%"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN31785"
></A
><P
><B
>Exemplu 1. <B
CLASS="function"
>ftp_nb_get()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br /><br /></font><font color="#FF8000">// Initate the download<br /></font><font color="#0000BB">$ret </font><font color="#007700">= </font><font color="#0000BB">ftp_nb_get</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">, </font><font color="#DD0000">"test"</font><font color="#007700">, </font><font color="#DD0000">"README"</font><font color="#007700">, </font><font color="#0000BB">FTP_BINARY</font><font color="#007700">);<br />while (</font><font color="#0000BB">$ret </font><font color="#007700">== </font><font color="#0000BB">FTP_MOREDATA</font><font color="#007700">) {<br /> <br /> </font><font color="#FF8000">// Do whatever you want<br /> </font><font color="#007700">echo </font><font color="#DD0000">"."</font><font color="#007700">;<br /><br /> </font><font color="#FF8000">// Continue downloading...<br /> </font><font color="#0000BB">$ret </font><font color="#007700">= </font><font color="#0000BB">ftp_nb_continue</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">);<br />}<br />if (</font><font color="#0000BB">$ret </font><font color="#007700">!= </font><font color="#0000BB">FTP_FINISHED</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"There was an error downloading the file..."</font><font color="#007700">;<br /> exit(</font><font color="#0000BB">1</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
<TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN31789"
></A
><P
><B
>Exemplu 2. Resuming a download with <B
CLASS="function"
>ftp_nb_get()</B
></B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br /><br /></font><font color="#FF8000">// Initate <br /></font><font color="#0000BB">$ret </font><font color="#007700">= </font><font color="#0000BB">ftp_nb_get</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">, </font><font color="#DD0000">"test"</font><font color="#007700">, </font><font color="#DD0000">"README"</font><font color="#007700">, </font><font color="#0000BB">FTP_BINARY</font><font color="#007700">, <br /> </font><font color="#0000BB">filesize</font><font color="#007700">(</font><font color="#DD0000">"test"</font><font color="#007700">));<br /></font><font color="#FF8000">// OR: $ret = ftp_nb_get($my_connection, "test", "README", <br />// FTP_BINARY, FTP_AUTORESUME);<br /></font><font color="#007700">while (</font><font color="#0000BB">$ret </font><font color="#007700">== </font><font color="#0000BB">FTP_MOREDATA</font><font color="#007700">) {<br /> <br /> </font><font color="#FF8000">// Do whatever you want<br /> </font><font color="#007700">echo </font><font color="#DD0000">"."</font><font color="#007700">;<br /><br /> </font><font color="#FF8000">// Continue downloading...<br /> </font><font color="#0000BB">$ret </font><font color="#007700">= </font><font color="#0000BB">ftp_nb_continue</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">);<br />}<br />if (</font><font color="#0000BB">$ret </font><font color="#007700">!= </font><font color="#0000BB">FTP_FINISHED</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"There was an error downloading the file..."</font><font color="#007700">;<br /> exit(</font><font color="#0000BB">1</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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></TABLE
></DIV
></TD
></TR
></TABLE
>
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN31793"
></A
><P
><B
>Exemplu 3.
Resuming a download at position 100 to a new
file with <B
CLASS="function"
>ftp_nb_get()</B
>
</B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br /><br /></font><font color="#FF8000">// Disable Autoseek<br /></font><font color="#0000BB">ftp_set_option</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">, </font><font color="#0000BB">FTP_AUTOSEEK</font><font color="#007700">, </font><font color="#0000BB">false</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// Initiate<br /></font><font color="#0000BB">$ret </font><font color="#007700">= </font><font color="#0000BB">ftp_nb_get</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">, </font><font color="#DD0000">"newfile"</font><font color="#007700">, </font><font color="#DD0000">"README"</font><font color="#007700">, </font><font color="#0000BB">FTP_BINARY</font><font color="#007700">, </font><font color="#0000BB">100</font><font color="#007700">);<br />while (</font><font color="#0000BB">$ret </font><font color="#007700">== </font><font color="#0000BB">FTP_MOREDATA</font><font color="#007700">) {<br /><br /> </font><font color="#FF8000">/* ... */<br /> <br /> // Continue downloading...<br /> </font><font color="#0000BB">$ret </font><font color="#007700">= </font><font color="#0000BB">ftp_nb_continue</font><font color="#007700">(</font><font color="#0000BB">$my_connection</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> In the example above, <TT
CLASS="filename"
>"newfile"</TT
> is 100 bytes smaller
than <TT
CLASS="filename"
>"README"</TT
> on the FTP server because we started
reading at offset 100. If we have not have disabled
<TT
CLASS="constant"
><B
>FTP_AUTOSEEK</B
></TT
>, the first 100 bytes of
<TT
CLASS="filename"
>"newfile"</TT
> will be <VAR
CLASS="literal"
>'\0'</VAR
>.
</P
><P
> See also <A
HREF="function.ftp-nb-fget.html"
><B
CLASS="function"
>ftp_nb_fget()</B
></A
>,
<A
HREF="function.ftp-nb-continue.html"
><B
CLASS="function"
>ftp_nb_continue()</B
></A
>,
<A
HREF="function.ftp-get.html"
><B
CLASS="function"
>ftp_get()</B
></A
>, and <A
HREF="function.ftp-fget.html"
><B
CLASS="function"
>ftp_fget()</B
></A
>.
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