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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
<HTML
><HEAD
><TITLE
>is_uploaded_file</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.57"><LINK
REL="HOME"
TITLE="PHP Manual"
HREF="manual.html"><LINK
REL="UP"
TITLE="Filesystem functions"
HREF="ref.filesystem.html"><LINK
REL="PREVIOUS"
TITLE="is_writeable"
HREF="function.is-writeable.html"><LINK
REL="NEXT"
TITLE="link"
HREF="function.link.html"><META
NAME="HTTP_EQUIV"
CONTENT="text/html; charset=ISO-8859-1"></HEAD
><BODY
CLASS="refentry"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>PHP Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="function.is-writeable.html"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="function.link.html"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="function.is-uploaded-file"
>is_uploaded_file</A
></H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN11631"
></A
><P
> (PHP3 CVS only, PHP4 CVS only)</P
>is_uploaded_file -- Tells whether the file was uploaded via HTTP POST.</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN11634"
></A
><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
><A
NAME="AEN11636"
></A
><P
></P
><P
><CODE
><CODE
CLASS="FUNCDEF"
>bool <B
CLASS="function"
>is_uploaded_file</B
></CODE
> (string filename)</CODE
></P
><P
></P
></DIV
><P
> This function is available only in versions of PHP 3 after PHP
3.0.16, and in versions of PHP 4 after 4.0.2.
</P
><P
> Returns true if the file named by <TT
CLASS="varname"
>filename</TT
> was
uploaded via HTTP POST. This is useful to help ensure that a
malicious user hasn't tried to trick the script into working on
files upon which it should not be working--for instance,
<TT
CLASS="filename"
>/etc/passwd</TT
>.
</P
><P
> This sort of check is especially important if there is any chance
that anything done with uploaded files could reveal their
contents to the user, or even to other users on the same
system.
</P
><P
> See also <A
HREF="function.move-uploaded-file.html"
><B
CLASS="function"
>move_uploaded_file()</B
></A
>, and the section
<A
HREF="features.file-upload.html"
>Handling file uploads</A
>
for a simple usage example.
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="function.is-writeable.html"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="manual.html"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.link.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>is_writeable</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.filesystem.html"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>link</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
|
