mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-21 11:28:55 +00:00
8b2c010b4f
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@132053 c90b9560-bf6c-de11-be94-00142212c4b1
70 lines
2.1 KiB
XML
70 lines
2.1 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!-- $Revision: 1.3 $ -->
|
|
<!-- splitted from ./en/functions/exec.xml, last change in rev 1.2 -->
|
|
<refentry id="function.escapeshellcmd">
|
|
<refnamediv>
|
|
<refname>escapeshellcmd</refname>
|
|
<refpurpose>escape shell metacharacters</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<methodsynopsis>
|
|
<type>string</type><methodname>escapeshellcmd</methodname>
|
|
<methodparam><type>string</type><parameter>command</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<para>
|
|
<function>escapeshellcmd</function> escapes any characters in a
|
|
string that might be used to trick a shell command into executing
|
|
arbitrary commands. This function should be used to make sure
|
|
that any data coming from user input is escaped before this data
|
|
is passed to the <function>exec</function> or
|
|
<function>system</function> functions, or to the <link
|
|
linkend="language.operators.execution">backtick
|
|
operator</link>. A standard use would be:</para>
|
|
<para>
|
|
<informalexample>
|
|
<programlisting role="php">
|
|
<![CDATA[
|
|
<?php
|
|
$e = escapeshellcmd($userinput);
|
|
|
|
// here we don't care if $e has spaces
|
|
system("echo $e");
|
|
$f = escapeshellcmd($filename);
|
|
|
|
// and here we do, so we use quotes
|
|
system("touch \"/tmp/$f\"; ls -l \"/tmp/$f\"");
|
|
?>
|
|
]]>
|
|
</programlisting>
|
|
</informalexample>
|
|
</para>
|
|
<para>
|
|
See also <function>escapeshellarg</function>, <function>exec</function>,
|
|
<function>popen</function>, <function>system</function>, and the <link
|
|
linkend="language.operators.execution">backtick operator</link>.
|
|
</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
|
|
-->
|