php-doc-en/reference/filesystem/functions/move-uploaded-file.xml
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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<!-- splitted from ./en/functions/filesystem.xml, last change in rev 1.2 -->
<refentry id="function.move-uploaded-file">
<refnamediv>
<refname>move_uploaded_file</refname>
<refpurpose>Moves an uploaded file to a new location</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>bool</type><methodname>move_uploaded_file</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
<methodparam><type>string</type><parameter>destination</parameter></methodparam>
</methodsynopsis>
<para>
This function checks to ensure that the file designated by
<parameter>filename</parameter> is a valid upload file (meaning
that it was uploaded via PHP's HTTP POST upload mechanism). If
the file is valid, it will be moved to the filename given by
<parameter>destination</parameter>.
</para>
<para>
If <parameter>filename</parameter> is not a valid upload file,
then no action will occur, and
<function>move_uploaded_file</function> will return
&false;.
</para>
<para>
If <parameter>filename</parameter> is a valid upload file, but
cannot be moved for some reason, no action will occur, and
<function>move_uploaded_file</function> will return
&false;. Additionally, a warning will be issued.
</para>
<para>
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.
</para>
&note.sm.uidcheck;
<note>
<para>
<function>move_uploaded_file</function> is not affected by the normal
safe-mode UID-restrictions. This is not unsafe because
<function>move_uploaded_file</function> only operates on files uploaded
via PHP.
</para>
</note>
<warning>
<para>
If the destination file already exists, it will be overwritten.
</para>
</warning>
<para>
See also <function>is_uploaded_file</function>, and the section
<link linkend="features.file-upload">Handling file uploads</link>
for a simple usage example.
</para>
</refsect1>
</refentry>
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