<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >mysqli_stmt_prepare</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="MySQL Melhorada" HREF="ref.mysqli.html"><LINK REL="PREVIOUS" TITLE="mysqli_stmt_param_count" HREF="function.mysqli-stmt-param-count.html"><LINK REL="NEXT" TITLE="mysqli_stmt_reset" HREF="function.mysqli-stmt-reset.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></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 do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.mysqli-stmt-param-count.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.mysqli-stmt-reset.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mysqli-stmt-prepare" ></A >mysqli_stmt_prepare</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN137393" ></A ><P > (PHP 5)</P >mysqli_stmt_prepare<P > (no version information, might be only in CVS)</P >stmt->prepare() -- Prepare a SQL statement for execution</DIV ><DIV CLASS="refsect1" ><A NAME="AEN137397" ></A ><H2 >Descrição</H2 ><P >Procedure style:</P >bool <B CLASS="methodname" >mysqli_stmt_prepare</B > ( mysqli_stmt stmt, string query )<BR ></BR ><P >Object oriented style (method)</P >class <B CLASS="classname" >mysqli_stmt</B > { <BR ></BR >mixed <B CLASS="methodname" >prepare</B > ( string query )<BR ></BR >}<P > Prepares the SQL query pointed to by the null-terminated string query. </P ><P > The parameter markers must be bound to application variables using <A HREF="function.mysqli-stmt-bind-param.html" ><B CLASS="function" >mysqli_stmt_bind_param()</B ></A > and/or <A HREF="function.mysqli-stmt-bind-result.html" ><B CLASS="function" >mysqli_stmt_bind_result()</B ></A > before executing the statement or fetching rows. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN137423" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" > stmt</CODE ></DT ><DD ><P >Apenas para estilo de procedimento: Um identificador de statement retornado por <A HREF="function.mysqli-stmt-init.html" ><B CLASS="function" >mysqli_stmt_init()</B ></A >.</P ></DD ><DT ><CODE CLASS="parameter" >query</CODE ></DT ><DD ><P > The query, as a string. It must consist of a single SQL statement. </P ><P > You can include one or more parameter markers in the SQL statement by embedding question mark (<TT CLASS="literal" >?</TT >) characters at the appropriate positions. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B > You should not add a terminating semicolon or <TT CLASS="literal" >\g</TT > to the statement. </P ></BLOCKQUOTE ></DIV ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B > The markers are legal only in certain places in SQL statements. For example, they are allowed in the VALUES() list of an INSERT statement (to specify column values for a row), or in a comparison with a column in a WHERE clause to specify a comparison value. </P ><P > However, they are not allowed for identifiers (such as table or column names), in the select list that names the columns to be returned by a SELECT statement), or to specify both operands of a binary operator such as the <TT CLASS="literal" >=</TT > equal sign. The latter restriction is necessary because it would be impossible to determine the parameter type. In general, parameters are legal only in Data Manipulation Languange (DML) statements, and not in Data Defination Language (DDL) statements. </P ></BLOCKQUOTE ></DIV ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN137447" ></A ><H2 >Valores de retornado</H2 ><P > Retorna <TT CLASS="constant" ><B >TRUE</B ></TT > em caso de sucesso ou <TT CLASS="constant" ><B >FALSE</B ></TT > em falhas. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN137452" ></A ><H2 >Exemplos</H2 ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN137454" ></A ><P ><B >Exemplo 1. Object oriented style</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#0000BB">$city </font><font color="#007700">= </font><font color="#DD0000">"Amersfoort"</font><font color="#007700">;<br /><br /></font><font color="#FF8000">/* create a prepared statement */<br /></font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">stmt_init</font><font color="#007700">();<br />if (</font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">prepare</font><font color="#007700">(</font><font color="#DD0000">"SELECT District FROM City WHERE Name=?"</font><font color="#007700">)) {<br /><br /> </font><font color="#FF8000">/* bind parameters for markers */<br /> </font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">bind_param</font><font color="#007700">(</font><font color="#DD0000">"s"</font><font color="#007700">, </font><font color="#0000BB">$city</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* execute query */<br /> </font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">execute</font><font color="#007700">();<br /><br /> </font><font color="#FF8000">/* bind result variables */<br /> </font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">bind_result</font><font color="#007700">(</font><font color="#0000BB">$district</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* fetch value */<br /> </font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">fetch</font><font color="#007700">();<br /><br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"%s is in district %s\n"</font><font color="#007700">, </font><font color="#0000BB">$city</font><font color="#007700">, </font><font color="#0000BB">$district</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* close statement */<br /> </font><font color="#0000BB">$stmt</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN137457" ></A ><P ><B >Exemplo 2. Procedural style</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$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">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#0000BB">$city </font><font color="#007700">= </font><font color="#DD0000">"Amersfoort"</font><font color="#007700">;<br /><br /></font><font color="#FF8000">/* create a prepared statement */<br /></font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">mysqli_stmt_init</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br />if (</font><font color="#0000BB">mysqli_stmt_prepare</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">, </font><font color="#DD0000">'SELECT District FROM City WHERE Name=?'</font><font color="#007700">)) {<br /><br /> </font><font color="#FF8000">/* bind parameters for markers */<br /> </font><font color="#0000BB">mysqli_stmt_bind_param</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">, </font><font color="#DD0000">"s"</font><font color="#007700">, </font><font color="#0000BB">$city</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* execute query */<br /> </font><font color="#0000BB">mysqli_stmt_execute</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* bind result variables */<br /> </font><font color="#0000BB">mysqli_stmt_bind_result</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">, </font><font color="#0000BB">$district</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* fetch value */<br /> </font><font color="#0000BB">mysqli_stmt_fetch</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /><br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"%s is in district %s\n"</font><font color="#007700">, </font><font color="#0000BB">$city</font><font color="#007700">, </font><font color="#0000BB">$district</font><font color="#007700">);<br /><br /> </font><font color="#FF8000">/* close statement */<br /> </font><font color="#0000BB">mysqli_stmt_close</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">mysqli_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><P >O exemplo acima irá imprimir:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Amersfoort is in district Utrecht</PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN137462" ></A ><H2 >Veja também</H2 ><P > <A HREF="function.mysqli-stmt-init.html" ><B CLASS="function" >mysqli_stmt_init()</B ></A >, <A HREF="function.mysqli-stmt-execute.html" ><B CLASS="function" >mysqli_stmt_execute()</B ></A >, <A HREF="function.mysqli-stmt-fetch.html" ><B CLASS="function" >mysqli_stmt_fetch()</B ></A >, <A HREF="function.mysqli-stmt-bind-param.html" ><B CLASS="function" >mysqli_stmt_bind_param()</B ></A >, <A HREF="function.mysqli-stmt-bind-result.html" ><B CLASS="function" >mysqli_stmt_bind_result()</B ></A > <A HREF="function.mysqli-stmt-close.html" ><B CLASS="function" >mysqli_stmt_close()</B ></A >. </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-param-count.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Principal</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.mysqli-stmt-reset.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mysqli_stmt_param_count</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.mysqli.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mysqli_stmt_reset</TD ></TR ></TABLE ></DIV ></BODY ></HTML >