1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<refentry id="function.sqlite-fetch-single">
<refnamediv>
<refname>sqlite_fetch_single</refname>
<refname>SQLiteResult->fetchSingle</refname>
<refname>SQLiteUnbuffered->fetchSingle</refname>
<refpurpose>Fetches the first column of a result set as a string</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>sqlite_fetch_single</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>decode_binary</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (method):</para>
<classsynopsis>
<ooclass><classname>SQLiteResult</classname></ooclass>
<methodsynopsis>
<type>string</type><methodname>fetchSingle</methodname>
<methodparam choice="opt"><type>bool</type><parameter>decode_binary</parameter></methodparam>
</methodsynopsis>
</classsynopsis>
<classsynopsis>
<ooclass><classname>SQLiteUnbuffered</classname></ooclass>
<methodsynopsis>
<type>string</type><methodname>fetchSingle</methodname>
<methodparam choice="opt"><type>bool</type><parameter>decode_binary</parameter></methodparam>
</methodsynopsis>
</classsynopsis>
<para>
<function>sqlite_fetch_single</function> is identical to
<function>sqlite_fetch_array</function> except that it returns the value
of the first column of the rowset.
</para>
<para>
This is the most optimal way to retrieve data when you are only
interested in the values from a single column of data.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>result</parameter></term>
<listitem>
<para>
The SQLite result resource. This parameter is not required when using
the object-oriented method.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>decode_binary</parameter></term>
<listitem>
&sqlite.decode-bin;
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A <function>sqlite_fetch_single</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
if ($dbhandle = sqlite_open('mysqlitedb', 0666, $sqliteerror)) {
$sql = "SELECT id FROM sometable WHERE id = 42";
$res = sqlite_query($dbhandle, $sql);
if (sqlite_num_rows($res) > 0) {
echo sqlite_fetch_single($res); // 42
}
sqlite_close($dbhandle);
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>sqlite_fetch_array</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
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
-->
|
