mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-16 00:48:54 +00:00
PDOStatement::fetchSingle becomes PDOStatement::fetchColumn.
Add new parameter to PDOStatement::fetchColumn. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@186675 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Dan Scott
parent
6973b509e1
commit
8dd919817d
6 changed files with 133 additions and 112 deletions
|
|
@ -1,5 +1,5 @@
|
|||
<?xml version='1.0' encoding='iso-8859-1'?>
|
||||
<!-- $Revision: 1.4 $ -->
|
||||
<!-- $Revision: 1.5 $ -->
|
||||
<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
|
||||
<refentry id="function.PDOStatement-bindColumn">
|
||||
<refnamediv>
|
||||
|
|
@ -143,7 +143,7 @@ strawberry red 25
|
|||
<member><function>PDOStatement::execute</function></member>
|
||||
<member><function>PDOStatement::fetch</function></member>
|
||||
<member><function>PDOStatement::fetchAll</function></member>
|
||||
<member><function>PDOStatement::fetchSingle</function></member>
|
||||
<member><function>PDOStatement::fetchColumn</function></member>
|
||||
</simplelist>
|
||||
</para>
|
||||
</refsect1>
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
<?xml version='1.0' encoding='iso-8859-1'?>
|
||||
<!-- $Revision: 1.6 $ -->
|
||||
<!-- $Revision: 1.7 $ -->
|
||||
<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
|
||||
<refentry id="function.PDOStatement-fetch">
|
||||
<refnamediv>
|
||||
|
|
@ -237,7 +237,7 @@ Reading backwards:
|
|||
<simplelist>
|
||||
<member><function>PDO::query</function></member>
|
||||
<member><function>PDOStatement::fetchAll</function></member>
|
||||
<member><function>PDOStatement::fetchSingle</function></member>
|
||||
<member><function>PDOStatement::fetchColumn</function></member>
|
||||
<member><function>PDOStatement::prepare</function></member>
|
||||
<member><function>PDOStatement::setFetchMode</function></member>
|
||||
</simplelist>
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
<?xml version='1.0' encoding='iso-8859-1'?>
|
||||
<!-- $Revision: 1.5 $ -->
|
||||
<!-- $Revision: 1.6 $ -->
|
||||
<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
|
||||
<refentry id="function.PDOStatement-fetchAll">
|
||||
<refnamediv>
|
||||
|
|
@ -106,7 +106,7 @@ Array
|
|||
<simplelist>
|
||||
<member><function>PDO::query</function></member>
|
||||
<member><function>PDOStatement::fetch</function></member>
|
||||
<member><function>PDOStatement::fetchSingle</function></member>
|
||||
<member><function>PDOStatement::fetchColumn</function></member>
|
||||
<member><function>PDOStatement::prepare</function></member>
|
||||
<member><function>PDOStatement::setFetchMode</function></member>
|
||||
</simplelist>
|
||||
|
|
|
|||
123
reference/pdo/functions/PDOStatement-fetchColumn.xml
Normal file
123
reference/pdo/functions/PDOStatement-fetchColumn.xml
Normal file
|
|
@ -0,0 +1,123 @@
|
|||
<?xml version='1.0' encoding='iso-8859-1'?>
|
||||
<!-- $Revision: 1.1 $ -->
|
||||
<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
|
||||
<refentry id="function.PDOStatement-fetchColumn">
|
||||
<refnamediv>
|
||||
<refname>PDOStatement::fetchColumn</refname>
|
||||
<refpurpose>
|
||||
Returns a single column from the next row of a result set
|
||||
</refpurpose>
|
||||
</refnamediv>
|
||||
|
||||
<refsect1 role="description">
|
||||
&reftitle.description;
|
||||
<methodsynopsis>
|
||||
<type>string</type><methodname>PDOStatement::fetchColumn</methodname>
|
||||
<methodparam choice="opt"><type>int</type><parameter>column_number</parameter></methodparam>
|
||||
</methodsynopsis>
|
||||
|
||||
&warn.experimental.func;
|
||||
|
||||
<para>
|
||||
Returns a single column from the next row of a result set.
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 role="parameters">
|
||||
&reftitle.parameters;
|
||||
<para>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><parameter>column_number</parameter></term>
|
||||
<listitem>
|
||||
<para>
|
||||
Number of the column you wish to retrieve from the row. If no value is
|
||||
supplied, <function>PDOStatement::fetchColumn</function> fetches the
|
||||
first column.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 role="returnvalues">
|
||||
&reftitle.returnvalues;
|
||||
<para>
|
||||
<function>PDOStatement::fetchColumn</function> returns a single column
|
||||
in the next row of a result set.
|
||||
</para>
|
||||
<warning>
|
||||
<para>
|
||||
There is no way to return a second column from the same row if you
|
||||
use <function>PDOStatement::fetchColumn</function> to retrieve data.
|
||||
</para>
|
||||
</warning>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 role="examples">
|
||||
&reftitle.examples;
|
||||
<para>
|
||||
<example><title>Return first column of the next row</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
|
||||
$sth->execute();
|
||||
|
||||
/* Fetch the first column from the next row in the result set */
|
||||
print("Fetch the first column from the next row in the result set:\n");
|
||||
$result = $sth->fetchColumn();
|
||||
print("$result\n");
|
||||
|
||||
$result = $sth->fetchColumn();
|
||||
print("$result\n");
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
&example.outputs;
|
||||
<screen>
|
||||
<![CDATA[
|
||||
Fetch the first column from the next row in the result set:
|
||||
lemon
|
||||
orange
|
||||
]]>
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 role="seealso">
|
||||
&reftitle.seealso;
|
||||
<para>
|
||||
<simplelist>
|
||||
<member><function>PDO::query</function></member>
|
||||
<member><function>PDOStatement::fetch</function></member>
|
||||
<member><function>PDOStatement::fetchAll</function></member>
|
||||
<member><function>PDOStatement::prepare</function></member>
|
||||
<member><function>PDOStatement::setFetchMode</function></member>
|
||||
</simplelist>
|
||||
</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!-- Keep this comment at the end of the file
|
||||
Local variables:
|
||||
mode: sgml
|
||||
sgml-omittag:t
|
||||
sgml-shorttag:t
|
||||
sgml-minimize-attributes:nil
|
||||
sgml-always-quote-attributes:t
|
||||
sgml-indent-step:1
|
||||
sgml-indent-data:t
|
||||
indent-tabs-mode:nil
|
||||
sgml-parent-document:nil
|
||||
sgml-default-dtd-file:"../../../../manual.ced"
|
||||
sgml-exposed-tags:nil
|
||||
sgml-local-catalogs:nil
|
||||
sgml-local-ecat-files:nil
|
||||
End:
|
||||
vim600: syn=xml fen fdm=syntax fdl=2 si
|
||||
vim: et tw=78 syn=sgml
|
||||
vi: ts=1 sw=1
|
||||
-->
|
||||
|
|
@ -1,102 +0,0 @@
|
|||
<?xml version='1.0' encoding='iso-8859-1'?>
|
||||
<!-- $Revision: 1.4 $ -->
|
||||
<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
|
||||
<refentry id="function.PDOStatement-fetchSingle">
|
||||
<refnamediv>
|
||||
<refname>PDOStatement::fetchSingle</refname>
|
||||
<refpurpose>
|
||||
Returns the first column in the next row of a result set
|
||||
</refpurpose>
|
||||
</refnamediv>
|
||||
|
||||
<refsect1 role="description">
|
||||
&reftitle.description;
|
||||
<methodsynopsis>
|
||||
<type>string</type><methodname>PDOStatement::fetchSingle</methodname>
|
||||
<void/>
|
||||
</methodsynopsis>
|
||||
|
||||
&warn.experimental.func;
|
||||
</refsect1>
|
||||
|
||||
<refsect1 role="returnvalues">
|
||||
&reftitle.returnvalues;
|
||||
<para>
|
||||
<function>PDOStatement::fetchSingle</function> returns the first column
|
||||
in the next row of a result set as a <literal>string</literal> value.
|
||||
</para>
|
||||
<warning>
|
||||
<para>
|
||||
There is no way to return the second or subsequent columns from a row
|
||||
if you use this method to retrieve data.
|
||||
</para>
|
||||
</warning>
|
||||
</refsect1>
|
||||
|
||||
|
||||
<refsect1 role="examples">
|
||||
&reftitle.examples;
|
||||
<para>
|
||||
<example><title>Return first column of the next row</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
|
||||
$sth->execute();
|
||||
|
||||
/* Fetch the first column from the next row in the result set */
|
||||
print("Fetch the first column from the next row in the result set:\n");
|
||||
$result = $sth->fetchSingle();
|
||||
print("$result\n");
|
||||
|
||||
$result = $sth->fetchSingle();
|
||||
print("$result\n");
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
&example.outputs;
|
||||
<screen>
|
||||
<![CDATA[
|
||||
Fetch the first column from the next row in the result set:
|
||||
lemon
|
||||
orange
|
||||
]]>
|
||||
</screen>
|
||||
</example>
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 role="seealso">
|
||||
&reftitle.seealso;
|
||||
<para>
|
||||
<simplelist>
|
||||
<member><function>PDO::query</function></member>
|
||||
<member><function>PDOStatement::fetch</function></member>
|
||||
<member><function>PDOStatement::fetchAll</function></member>
|
||||
<member><function>PDOStatement::prepare</function></member>
|
||||
<member><function>PDOStatement::setFetchMode</function></member>
|
||||
</simplelist>
|
||||
</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!-- Keep this comment at the end of the file
|
||||
Local variables:
|
||||
mode: sgml
|
||||
sgml-omittag:t
|
||||
sgml-shorttag:t
|
||||
sgml-minimize-attributes:nil
|
||||
sgml-always-quote-attributes:t
|
||||
sgml-indent-step:1
|
||||
sgml-indent-data:t
|
||||
indent-tabs-mode:nil
|
||||
sgml-parent-document:nil
|
||||
sgml-default-dtd-file:"../../../../manual.ced"
|
||||
sgml-exposed-tags:nil
|
||||
sgml-local-catalogs:nil
|
||||
sgml-local-ecat-files:nil
|
||||
End:
|
||||
vim600: syn=xml fen fdm=syntax fdl=2 si
|
||||
vim: et tw=78 syn=sgml
|
||||
vi: ts=1 sw=1
|
||||
-->
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
<?xml version='1.0' encoding='iso-8859-1'?>
|
||||
<!-- $Revision: 1.6 $ -->
|
||||
<!-- $Revision: 1.7 $ -->
|
||||
<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
|
||||
<refentry id="function.PDOStatement-rowCount">
|
||||
<refnamediv>
|
||||
|
|
@ -66,7 +66,7 @@ Deleted 9 rows.
|
|||
return the number of rows affected by a SELECT statement. Instead, use
|
||||
<function>PDO::query</function> to issue a SELECT COUNT(*) statement
|
||||
with the same predicates as your intended SELECT statement, then use
|
||||
<function>PDOStatement::fetchSingle</function> to retrieve the number
|
||||
<function>PDOStatement::fetchColumn</function> to retrieve the number
|
||||
of rows that will be returned. Your application can then perform the
|
||||
correct action.
|
||||
</para>
|
||||
|
|
@ -77,7 +77,7 @@ $sql = "SELECT COUNT(*) FROM fruit WHERE calories > 100";
|
|||
if ($res = $conn->query($sql)) {
|
||||
|
||||
// Check the number of rows that match the SELECT statement
|
||||
if ($res->fetchSingle() > 0) {
|
||||
if ($res->fetchColumn() > 0) {
|
||||
|
||||
// Issue the real SELECT statement and work with the results
|
||||
$sql = "SELECT name FROM fruit WHERE calories > 100";
|
||||
|
|
@ -114,8 +114,8 @@ pear
|
|||
<para>
|
||||
<simplelist>
|
||||
<member><function>PDOStatement::columnCount</function></member>
|
||||
<member><function>PDOStatement::fetchColumn</function></member>
|
||||
<member><function>PDOStatement::query</function></member>
|
||||
<member><function>PDOStatement::fetchSingle</function></member>
|
||||
</simplelist>
|
||||
</para>
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue