<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >mysqli_rollback</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_report" HREF="function.mysqli-report.html"><LINK REL="NEXT" TITLE="mysqli_rpl_parse_enabled" HREF="function.mysqli-rpl-parse-enabled.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-report.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-rpl-parse-enabled.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mysqli-rollback" ></A >mysqli_rollback</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN135854" ></A ><P > (PHP 5)</P >mysqli_rollback<P > (no version information, might be only in CVS)</P >mysqli->rollback() -- Rolls back current transaction</DIV ><DIV CLASS="refsect1" ><A NAME="AEN135858" ></A ><H2 >Descrição</H2 >bool <B CLASS="methodname" >mysqli_rollback</B > ( mysqli link )<BR ></BR >class <B CLASS="classname" >mysqli</B > { <BR ></BR >bool <B CLASS="methodname" >rollback</B > ( void )<BR ></BR >}<P > Rollbacks the current transaction for the database. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN135874" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" > link</CODE ></DT ><DD ><P >Apenas para estilo de procedimento: Um identificador de conexão retornado por <A HREF="function.mysqli-connect.html" ><B CLASS="function" >mysqli_connect()</B ></A > or <A HREF="function.mysqli-init.html" ><B CLASS="function" >mysqli_init()</B ></A > </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN135885" ></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="AEN135890" ></A ><H2 >Exemplos</H2 ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN135892" ></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 />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#FF8000">/* disable autocommit */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">autocommit</font><font color="#007700">(</font><font color="#0000BB">FALSE</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"CREATE TABLE myCity LIKE City"</font><font color="#007700">);<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"ALTER TABLE myCity Type=InnoDB"</font><font color="#007700">);<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"INSERT INTO myCity SELECT * FROM City LIMIT 50"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* commit insert */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">commit</font><font color="#007700">();<br /><br /></font><font color="#FF8000">/* delete all rows */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"DELETE FROM myCity"</font><font color="#007700">);<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"SELECT COUNT(*) FROM myCity"</font><font color="#007700">)) {<br /> </font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">fetch_row</font><font color="#007700">();<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"%d rows in table myCity.\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /> </font><font color="#FF8000">/* Free result */<br /> </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* Rollback */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">rollback</font><font color="#007700">();<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"SELECT COUNT(*) FROM myCity"</font><font color="#007700">)) {<br /> </font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">fetch_row</font><font color="#007700">();<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"%d rows in table myCity (after rollback).\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /> </font><font color="#FF8000">/* Free result */<br /> </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* Drop table myCity */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"DROP TABLE myCity"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$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="AEN135895" ></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 />$link </font><font color="#007700">= </font><font color="#0000BB">mysqli_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#FF8000">/* disable autocommit */<br /></font><font color="#0000BB">mysqli_autocommit</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#0000BB">FALSE</font><font color="#007700">);<br /><br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"CREATE TABLE myCity LIKE City"</font><font color="#007700">);<br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"ALTER TABLE myCity Type=InnoDB"</font><font color="#007700">);<br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"INSERT INTO myCity SELECT * FROM City LIMIT 50"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* commit insert */<br /></font><font color="#0000BB">mysqli_commit</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* delete all rows */<br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"DELETE FROM myCity"</font><font color="#007700">);<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"SELECT COUNT(*) FROM myCity"</font><font color="#007700">)) {<br /> </font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_row</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"%d rows in table myCity.\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /> </font><font color="#FF8000">/* Free result */<br /> </font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* Rollback */<br /></font><font color="#0000BB">mysqli_rollback</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"SELECT COUNT(*) FROM myCity"</font><font color="#007700">)) {<br /> </font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_row</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"%d rows in table myCity (after rollback).\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /> </font><font color="#FF8000">/* Free result */<br /> </font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* Drop table myCity */<br /></font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"DROP TABLE myCity"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">mysqli_close</font><font color="#007700">(</font><font color="#0000BB">$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" >0 rows in table myCity. 50 rows in table myCity (after rollback).</PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN135900" ></A ><H2 >Veja também</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.mysqli-commit.html" ><B CLASS="function" >mysqli_commit()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.mysqli-autocommit.html" ><B CLASS="function" >mysqli_autocommit()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </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-report.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-rpl-parse-enabled.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mysqli_report</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_rpl_parse_enabled</TD ></TR ></TABLE ></DIV ></BODY ></HTML >