<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <HTML ><HEAD ><TITLE >mysqli_stmt_result_metadata</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Manual PHP" HREF="index.html"><LINK REL="UP" TITLE="Improved MySQL Extension" HREF="ref.mysqli.html"><LINK REL="PREVIOUS" TITLE="mysqli_stmt_reset" HREF="function.mysqli-stmt-reset.html"><LINK REL="NEXT" TITLE="mysqli_stmt_send_long_data" HREF="function.mysqli-stmt-send-long-data.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-2"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Manual PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.mysqli-stmt-reset.html" ACCESSKEY="P" >Înapoi</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.mysqli-stmt-send-long-data.html" ACCESSKEY="N" >Înainte</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mysqli-stmt-result-metadata" ></A >mysqli_stmt_result_metadata</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN72626" ></A ><P > (PHP 5)</P >mysqli_stmt_result_metadata -- returns result set metadata from a prepared statement</DIV ><DIV CLASS="refsect1" ><A NAME="AEN72629" ></A ><H2 >Description</H2 ><P >Procedural style:</P >mixed <B CLASS="methodname" >mysqli_stmt_result_metadata</B > ( object stmt)<BR ></BR ><P >Object oriented style (method):</P >class <B CLASS="classname" >stmt</B > { <BR ></BR >mixed <B CLASS="methodname" >result_metadata</B > ( void )<BR ></BR >}<P > If a statement passed to <A HREF="function.mysqli-prepare.html" ><B CLASS="function" >mysqli_prepare()</B ></A > is one that produces a result set, <B CLASS="function" >mysqli_stmt_result_metadata()</B > returns the result object that can be used to process the meta information such as total number of fields and individual field information. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Notã: </B >This result set pointer can be passed as an argument to any of the field-based functions that process result set metadata, such as: <P ></P ><UL ><LI ><P ><A HREF="function.mysqli-num-fields.html" ><B CLASS="function" >mysqli_num_fields()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-fetch-field.html" ><B CLASS="function" >mysqli_fetch_field()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-fetch-field-direct.html" ><B CLASS="function" >mysqli_fetch_field_direct()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-fetch-fields.html" ><B CLASS="function" >mysqli_fetch_fields()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-field-count.html" ><B CLASS="function" >mysqli_field_count()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-field-seek.html" ><B CLASS="function" >mysqli_field_seek()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-field-tell.html" ><B CLASS="function" >mysqli_field_tell()</B ></A ></P ></LI ><LI ><P ><A HREF="function.mysqli-free-result.html" ><B CLASS="function" >mysqli_free_result()</B ></A ></P ></LI ></UL > </P ></BLOCKQUOTE ></DIV ><P > The result set structure should be freed when you are done with it, which you can do by passing it to <A HREF="function.mysqli-free-result.html" ><B CLASS="function" >mysqli_free_result()</B ></A > </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Notã: </B > The result set returned by <B CLASS="function" >mysqli_stmt_result_metadata()</B > contains only metadata. It does not contain any row results. The rows are obtained by using the statement handle with <A HREF="function.mysqli-fetch.html" ><B CLASS="function" >mysqli_fetch()</B ></A >. </P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN72682" ></A ><H2 >Return values</H2 ><P > <B CLASS="function" >mysqli_stmt_result_metadata()</B > returns a result object or <TT CLASS="constant" ><B >FALSE</B ></TT > if an error occured. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN72687" ></A ><H2 >See also:</H2 ><P > <A HREF="function.mysqli-prepare.html" ><B CLASS="function" >mysqli_prepare()</B ></A >, <A HREF="function.mysqli-free-result.html" ><B CLASS="function" >mysqli_free_result()</B ></A > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN72692" ></A ><H2 >Example</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN72695" ></A ><P ><B >Exemplu 1. Object oriented style</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"test"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"DROP TABLE IF EXISTS friends"</font><font color="#007700">); <br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"CREATE TABLE friends (id int, name varchar(20))"</font><font color="#007700">); <br /> <br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">prepare</font><font color="#007700">(</font><font color="#DD0000">"SELECT id, name FROM friends"</font><font color="#007700">);<br /></font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">execute</font><font color="#007700">();<br /><br /></font><font color="#FF8000">/* get resultset for metadata */<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">result_metadata</font><font color="#007700">();<br /><br /></font><font color="#FF8000">/* retrieve field information from metadata result set */<br /></font><font color="#0000BB">$field </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">fetch_field</font><font color="#007700">();<br /><br /></font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Fieldname: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$field</font><font color="#007700">-></font><font color="#0000BB">name</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* close resultset */<br /></font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN72698" ></A ><P ><B >Exemplu 2. Procedural style</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">mysqli_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"test"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"DROP TABLE IF EXISTS friends"</font><font color="#007700">); <br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"CREATE TABLE friends (id int, name varchar(20))"</font><font color="#007700">); <br /> <br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">mysqli_prepare</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"SELECT id, name FROM friends"</font><font color="#007700">);<br /></font><font color="#0000BB">mysqli_stmt_execute</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* get resultset for metadata */<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_stmt_result_metadata</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* retrieve field information from metadata result set */<br /></font><font color="#0000BB">$field </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_field</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /><br /></font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Fieldname: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$field</font><font color="#007700">-></font><font color="#0000BB">name</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* close resultset */<br /></font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">mysqli_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.mysqli-stmt-reset.html" ACCESSKEY="P" >Înapoi</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Acasã</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.mysqli-stmt-send-long-data.html" ACCESSKEY="N" >Înainte</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mysqli_stmt_reset</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.mysqli.html" ACCESSKEY="U" >Sus</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mysqli_stmt_send_long_data</TD ></TR ></TABLE ></DIV ></BODY ></HTML >