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><H1
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>fbsql_query</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN60265"
></A
><P
> (PHP 4 >= 4.0.6, PHP 5)</P
>fbsql_query -- Send a FrontBase query</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN60268"
></A
><H2
>说明</H2
>resource <B
CLASS="methodname"
>fbsql_query</B
> ( string query [, resource link_identifier [, int batch_size]] )<BR
></BR
><P
> Sends a <CODE
CLASS="parameter"
>query</CODE
> to the currently active database on
the server.
</P
><P
> If the query succeeds, you can call <A
HREF="function.fbsql-num-rows.html"
><B
CLASS="function"
>fbsql_num_rows()</B
></A
> to
find out how many rows were returned for a SELECT statement or
<A
HREF="function.fbsql-affected-rows.html"
><B
CLASS="function"
>fbsql_affected_rows()</B
></A
> to find out how many rows were
affected by a DELETE, INSERT, REPLACE, or UPDATE statement.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN60287"
></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>query</CODE
></DT
><DD
><P
> The SQL query to be executed.
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
The query string shall always end with a semicolon.
</P
></BLOCKQUOTE
></DIV
></DD
><DT
><CODE
CLASS="parameter"
> link_identifier</CODE
></DT
><DD
><P
>A FrontBase link identifier
returned by <A
HREF="function.fbsql-connect.html"
><B
CLASS="function"
>fbsql_connect()</B
></A
> or
<A
HREF="function.fbsql-pconnect.html"
><B
CLASS="function"
>fbsql_pconnect()</B
></A
>.</P
><P
>If optional and not specified,
the function will try to find an open link to the FrontBase server and if no
such link is found it will try to create one as if
<A
HREF="function.fbsql-connect.html"
><B
CLASS="function"
>fbsql_connect()</B
></A
> was called with no arguments</P
></DD
><DT
><CODE
CLASS="parameter"
>batch_size</CODE
></DT
><DD
><P
> </P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN60312"
></A
><H2
>返回值</H2
><P
> <B
CLASS="function"
>fbsql_query()</B
> returns <TT
CLASS="constant"
><B
>TRUE</B
></TT
> (non-zero) or <TT
CLASS="constant"
><B
>FALSE</B
></TT
>
to indicate whether or not the query succeeded. A return value
of <TT
CLASS="constant"
><B
>TRUE</B
></TT
> means that the query was legal and could be executed by
the server. It does not indicate anything about the number of
rows affected or returned. It is perfectly possible for a query
to succeed but affect no rows or return no rows.
</P
><P
> For SELECT statements, <B
CLASS="function"
>fbsql_query()</B
> returns a new
result identifier that you can pass to <A
HREF="function.fbsql-result.html"
><B
CLASS="function"
>fbsql_result()</B
></A
>.
</P
><P
> <B
CLASS="function"
>fbsql_query()</B
> will also fail and return <TT
CLASS="constant"
><B
>FALSE</B
></TT
> if you
don't have permission to access the table(s) referenced by the query.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN60325"
></A
><H2
>范例</H2
><P
> The following query is syntactically invalid, so
<B
CLASS="function"
>fbsql_query()</B
> fails and returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
>:
<TABLE
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BORDER="0"
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CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN60330"
></A
><P
><B
>例 1. <B
CLASS="function"
>fbsql_query()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />$result </font><font color="#007700">= </font><font color="#0000BB">fbsql_query</font><font color="#007700">(</font><font color="#DD0000">"SELECT * WHERE 1=1"</font><font color="#007700">)<br /> or die (</font><font color="#DD0000">"Invalid query"</font><font color="#007700">);<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> The following query is semantically invalid if
<TT
CLASS="literal"
>my_col</TT
> is not a column in the table
<TT
CLASS="literal"
>my_tbl</TT
>, so <B
CLASS="function"
>fbsql_query()</B
>
fails and returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
>:
<TABLE
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BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN60339"
></A
><P
><B
>例 2. <B
CLASS="function"
>fbsql_query()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />$result </font><font color="#007700">= </font><font color="#0000BB">fbsql_query </font><font color="#007700">(</font><font color="#DD0000">"SELECT my_col FROM my_tbl;"</font><font color="#007700">)<br /> or die (</font><font color="#DD0000">"Invalid query"</font><font color="#007700">);<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN60343"
></A
><H2
>参见</H2
><P
> <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.fbsql-affected-rows.html"
><B
CLASS="function"
>fbsql_affected_rows()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.fbsql-db-query.html"
><B
CLASS="function"
>fbsql_db_query()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.fbsql-free-result.html"
><B
CLASS="function"
>fbsql_free_result()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.fbsql-result.html"
><B
CLASS="function"
>fbsql_result()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.fbsql-select-db.html"
><B
CLASS="function"
>fbsql_select_db()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.fbsql-connect.html"
><B
CLASS="function"
>fbsql_connect()</B
></A
></TD
></TR
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></P
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