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
150
|
<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 1.17 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.sscanf" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>sscanf</refname>
<refpurpose>Parses input from a string according to a format</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>mixed</type><methodname>sscanf</methodname>
<methodparam><type>string</type><parameter>str</parameter></methodparam>
<methodparam><type>string</type><parameter>format</parameter></methodparam>
<methodparam choice="opt"><type>mixed</type><parameter role="reference">...</parameter></methodparam>
</methodsynopsis>
<para>
The function <function>sscanf</function> is the input analog of
<function>printf</function>. <function>sscanf</function> reads
from the string <parameter>str</parameter> and interprets it
according to the specified <parameter>format</parameter>, which is
described in the documentation for <function>sprintf</function>.
</para>
<para>
Any whitespace in the format string matches any whitespace in the input
string. This means that even a tab \t in the format string can match a
single space character in the input string.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>str</parameter></term>
<listitem>
<para>
The input <type>string</type> being parsed.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>format</parameter></term>
<listitem>
<para>
The interpreted format for <parameter>str</parameter>, which is
described in the documentation for <function>sprintf</function>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>...</parameter></term>
<listitem>
<para>
Optionally pass in variables by reference that will contain the parsed values.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
If only
two parameters were passed to this function, the values parsed
will be returned as an array. Otherwise, if optional parameters are passed,
the function will return the number of assigned values. The optional
parameters must be passed by reference.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>sscanf</function> Example</title>
<programlisting role="php">
<![CDATA[
<?php
// getting the serial number
list($serial) = sscanf("SN/2350001", "SN/%d");
// and the date of manufacturing
$mandate = "January 01 2000";
list($month, $day, $year) = sscanf($mandate, "%s %d %d");
echo "Item $serial was manufactured on: $year-" . substr($month, 0, 3) . "-$day\n";
?>
]]>
</programlisting>
</example>
</para>
<para>
If optional parameters are passed, the function will return the
number of assigned values.
</para>
<para>
<example>
<title><function>sscanf</function> - using optional parameters</title>
<programlisting role="php">
<![CDATA[
<?php
// get author info and generate DocBook entry
$auth = "24\tLewis Carroll";
$n = sscanf($auth, "%d\t%s %s", $id, $first, $last);
echo "<author id='$id'>
<firstname>$first</firstname>
<surname>$last</surname>
</author>\n";
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>fscanf</function></member>
<member><function>printf</function></member>
<member><function>sprintf</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
-->
|
