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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
<refentry xml:id="function.posix-access" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>posix_access</refname>
<refpurpose>
Determine accessibility of a file
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>posix_access</methodname>
<methodparam><type>string</type><parameter>file</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>mode</parameter></methodparam>
</methodsynopsis>
<para>
<function>posix_access</function> checks the user's permission of a file.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>file</parameter></term>
<listitem>
<para>
The name of the file to be tested.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>mode</parameter></term>
<listitem>
<para>
A mask consisting of one or more of <constant>POSIX_F_OK</constant>,
<constant>POSIX_R_OK</constant>, <constant>POSIX_W_OK</constant> and
<constant>POSIX_X_OK</constant>. Defaults to
<constant>POSIX_F_OK</constant>.
</para>
<para>
<constant>POSIX_R_OK</constant>, <constant>POSIX_W_OK</constant> and
<constant>POSIX_X_OK</constant> request checking whether the file
exists and has read, write and execute permissions, respectively.
<constant>POSIX_F_OK</constant> just requests checking for the
existence of the file.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>posix_access</function> example</title>
<para>
This example will check if the $file is readable and writable, otherwise
will print an error message.
</para>
<programlisting role="php">
<![CDATA[
<?php
$file = 'some_file';
if (posix_access($file, POSIX_R_OK | POSIX_W_OK)) {
echo 'The file is readable and writable!';
} else {
$error = posix_get_last_error();
echo "Error $error: " . posix_strerror($error);
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
¬e.sm.uidcheck;
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>posix_get_last_error</function></member>
<member><function>posix_strerror</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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