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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.15 $ -->
<refentry id="function.mysqli-fetch-lengths">
<refnamediv>
<refname>mysqli_fetch_lengths</refname>
<refname>result->lengths</refname>
<refpurpose>Returns the lengths of the columns of the current row in the result set</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style:</para>
<methodsynopsis>
<type>mixed</type><methodname>mysqli_fetch_lengths</methodname>
<methodparam><type>mysqli_result</type><parameter>result</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (property):</para>
<classsynopsis>
<ooclass><classname>mysqli_result</classname></ooclass>
<fieldsynopsis><type>mixed</type><varname>lengths</varname></fieldsynopsis>
</classsynopsis>
<para>
The <function>mysqli_fetch_lengths</function> function returns an array containing the
lengths of every column of the current row within the result set represented by the
<parameter>result</parameter> parameter. If successful, a numerically indexed array
representing the lengths of each column is returned or &false; on failure.
</para>
</refsect1>
<refsect1>
&reftitle.returnvalues;
<para>
An array of integers representing the size of each column (not including
any terminating null characters). &false; if an error occurred.
</para>
<para>
<function>mysqli_fetch_lengths</function> is valid only for the current row of the result set.
It returns &false; if you call it before calling mysqli_fetch_row/array/object or after retrieving
all rows in the result.
</para>
</refsect1>
<refsect1>
&reftitle.examples;
<example>
<title>Object oriented style</title>
<programlisting role="php">
<![CDATA[
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT * from Country ORDER BY Code LIMIT 1";
if ($result = $mysqli->query($query)) {
$row = $result->fetch_row();
/* display column lengths */
for ($i=0; $i < count($result->lengths); $i++) {
printf("Field %2d has Length %2d\n", $i+1, $result->lengths[$i]);
}
$result->close();
}
/* close connection */
$mysqli->close();
?>
]]>
</programlisting>
</example>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT * from Country ORDER BY Code LIMIT 1";
if ($result = mysqli_query($link, $query)) {
$row = mysqli_fetch_row($result);
/* display column lengths */
$lengths = mysqli_fetch_lengths($result);
for ($i=0; $i < count($lengths); $i++) {
printf("Field %2d has Length %2d\n", $i+1, $lengths[$i]);
}
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>
]]>
</programlisting>
</example>
&example.outputs;
<screen>
<![CDATA[
Field 1 has Length 3
Field 2 has Length 5
Field 3 has Length 13
Field 4 has Length 9
Field 5 has Length 6
Field 6 has Length 1
Field 7 has Length 6
Field 8 has Length 4
Field 9 has Length 6
Field 10 has Length 6
Field 11 has Length 5
Field 12 has Length 44
Field 13 has Length 7
Field 14 has Length 3
Field 15 has Length 2
]]>
</screen>
</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
-->
|
