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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.18 $ -->
<refentry xml:id="function.error-log" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>error_log</refname>
<refpurpose>Send an error message somewhere</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>error_log</methodname>
<methodparam><type>string</type><parameter>message</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>message_type</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>destination</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>extra_headers</parameter></methodparam>
</methodsynopsis>
<para>
Sends an error message to the web server's error log, a
<acronym>TCP</acronym> port or to a file.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>message</parameter></term>
<listitem>
<para>
The error message that should be logged.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>message_type</parameter></term>
<listitem>
<para>
Says where the error should go. The possible message types are as
follows:
</para>
<para>
<table>
<title><function>error_log</function> log types</title>
<tgroup cols="2">
<tbody>
<row>
<entry>0</entry>
<entry>
<parameter>message</parameter> is sent to PHP's system logger, using
the Operating System's system logging mechanism or a file, depending
on what the <link linkend="ini.error-log">error_log</link>
configuration directive is set to. This is the default option.
</entry>
</row>
<row>
<entry>1</entry>
<entry>
<parameter>message</parameter> is sent by email to the address in
the <parameter>destination</parameter> parameter. This is the only
message type where the fourth parameter,
<parameter>extra_headers</parameter> is used.
</entry>
</row>
<row>
<entry>2</entry>
<entry>
No longer an option.
</entry>
</row>
<row>
<entry>3</entry>
<entry>
<parameter>message</parameter> is appended to the file
<parameter>destination</parameter>. A newline is not automatically
added to the end of the <parameter>message</parameter> string.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>destination</parameter></term>
<listitem>
<para>
The destination. Its meaning depends on the
<parameter>message_type</parameter> parameter as described above.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>extra_headers</parameter></term>
<listitem>
<para>
The extra headers. It's used when the <parameter>message_type</parameter>
parameter is set to <literal>1</literal>.
This message type uses the same internal function as
<function>mail</function> does.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example role="php">
<title><function>error_log</function> examples</title>
<programlisting role="php">
<![CDATA[
<?php
// Send notification through the server log if we can not
// connect to the database.
if (!Ora_Logon($username, $password)) {
error_log("Oracle database not available!", 0);
}
// Notify administrator by email if we run out of FOO
if (!($foo = allocate_new_foo())) {
error_log("Big trouble, we're all out of FOOs!", 1,
"operator@example.com");
}
// another way to call error_log():
error_log("You messed up!", 3, "/var/tmp/my-errors.log");
?>
]]>
</programlisting>
</example>
</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
-->
|
