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>pg_field_name</H1
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> (PHP 4 >= 4.2.0, PHP 5)</P
>pg_field_name -- Retorna o nome de um campo</DIV
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><H2
>Descrição</H2
>string <B
CLASS="methodname"
>pg_field_name</B
> ( resource result, int field_number )<BR
></BR
><P
> <B
CLASS="function"
>pg_field_name()</B
> retorna o nome do campo ocupando o
campo de número igual a <CODE
CLASS="parameter"
>field_number</CODE
> no recurso (resource) de
resultado <CODE
CLASS="parameter"
>result</CODE
>. A numeração de campo
inicia-se em 0.
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><B
>Exemplo 1. Getting informations about fields</B
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><code><font color="#000000">
<font color="#0000BB"><?php<br /> $dbconn </font><font color="#007700">= </font><font color="#0000BB">pg_connect</font><font color="#007700">(</font><font color="#DD0000">"dbname=publisher"</font><font color="#007700">) or die(</font><font color="#DD0000">"Could not connect"</font><font color="#007700">);<br /><br /> </font><font color="#0000BB">$res </font><font color="#007700">= </font><font color="#0000BB">pg_query</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">, </font><font color="#DD0000">"select * from authors where author = 'Orwell'"</font><font color="#007700">);<br /> </font><font color="#0000BB">$i </font><font color="#007700">= </font><font color="#0000BB">pg_num_fields</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">);<br /> for (</font><font color="#0000BB">$j </font><font color="#007700">= </font><font color="#0000BB">0</font><font color="#007700">; </font><font color="#0000BB">$j </font><font color="#007700">< </font><font color="#0000BB">$i</font><font color="#007700">; </font><font color="#0000BB">$j</font><font color="#007700">++) {<br /> echo </font><font color="#DD0000">"column $j</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br /> </font><font color="#0000BB">$fieldname </font><font color="#007700">= </font><font color="#0000BB">pg_field_name</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">, </font><font color="#0000BB">$j</font><font color="#007700">);<br /> echo </font><font color="#DD0000">"fieldname: $fieldname</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br /> echo </font><font color="#DD0000">"printed length: "</font><font color="#007700">.</font><font color="#0000BB">pg_field_prtlen</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">, </font><font color="#0000BB">$fieldname</font><font color="#007700">).</font><font color="#DD0000">" characters\n"</font><font color="#007700">;<br /> echo </font><font color="#DD0000">"storage length: "</font><font color="#007700">.</font><font color="#0000BB">pg_field_size</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">, </font><font color="#0000BB">$j</font><font color="#007700">).</font><font color="#DD0000">" bytes\n"</font><font color="#007700">;<br /> echo </font><font color="#DD0000">"field type: "</font><font color="#007700">.</font><font color="#0000BB">pg_field_type</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">, </font><font color="#0000BB">$j</font><font color="#007700">).</font><font color="#DD0000">" \n\n"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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> The above example would produce the following output:
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>column 0
fieldname: author
printed length: 6 characters
storage length: -1 bytes
field type: varchar
column 1
fieldname: year
printed length: 4 characters
storage length: 2 bytes
field type: int2
column 2
fieldname: title
printed length: 24 characters
storage length: -1 bytes
field type: varchar</PRE
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</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
Esta função era chamada <TT
CLASS="literal"
>pg_fieldname()</TT
>.
</P
></BLOCKQUOTE
></DIV
><P
> Veja também <A
HREF="function.pg-field-num.html"
><B
CLASS="function"
>pg_field_num()</B
></A
>.
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