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>pg_update</H1
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> (PHP 4 >= 4.3.0, PHP 5)</P
>pg_update --
更新表
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><H2
>说明</H2
>mixed <B
CLASS="methodname"
>pg_update</B
> ( resource connection, string table_name, array data, array condition [, int options] )<BR
></BR
><P
> <B
CLASS="function"
>pg_update()</B
> 用 <TT
CLASS="literal"
>condition</TT
> 作为条件查询数据库，用 <TT
CLASS="literal"
>data</TT
> 中的数据更新符合条件的记录。如果指定了 <TT
CLASS="literal"
>options</TT
>，则 <A
HREF="function.pg-convert.html"
><B
CLASS="function"
>pg_convert()</B
></A
> 会按照指定选项作用到 <TT
CLASS="literal"
>data</TT
> 上。
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>例 1. pg_update</B
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><code><font color="#000000">
<font color="#0000BB"><?php <br /> $db </font><font color="#007700">= </font><font color="#0000BB">pg_connect </font><font color="#007700">(</font><font color="#DD0000">'dbname=foo'</font><font color="#007700">);<br /> </font><font color="#0000BB">$data </font><font color="#007700">= array(</font><font color="#DD0000">'field1'</font><font color="#007700">=></font><font color="#DD0000">'AA'</font><font color="#007700">, </font><font color="#DD0000">'field2'</font><font color="#007700">=></font><font color="#DD0000">'BB'</font><font color="#007700">);<br /> </font><font color="#FF8000">// This is safe, since $_POST is converted automatically<br /> </font><font color="#0000BB">$res </font><font color="#007700">= </font><font color="#0000BB">pg_update</font><font color="#007700">(</font><font color="#0000BB">$db</font><font color="#007700">, </font><font color="#DD0000">'post_log'</font><font color="#007700">, </font><font color="#0000BB">$_POST</font><font color="#007700">, </font><font color="#0000BB">$data</font><font color="#007700">);<br /> if (</font><font color="#0000BB">$res</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"Data is updated: $res</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br /> }<br /> else {<br /> echo </font><font color="#DD0000">"User must have sent wrong inputs\n"</font><font color="#007700">;<br /> }<br /></font><font color="#0000BB">?></font>
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>警告</B
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>本函数是<SPAN
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>实验性</I
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>的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随
PHP 以后的发布而改变。使用本函数风险自担。</P
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> 参见 <A
HREF="function.pg-convert.html"
><B
CLASS="function"
>pg_convert()</B
></A
>。
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