Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>escapeshellcmd</H1
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>    (PHP 3, PHP 4 )</P
>escapeshellcmd&nbsp;--&nbsp;escape shell metacharacters</DIV
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>Description</H2
>string <B
CLASS="methodname"
>escapeshellcmd</B
> ( string command)<BR
></BR
><P
>&#13;     <B
CLASS="function"
>escapeshellcmd()</B
> 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 <A
HREF="function.exec.html"
><B
CLASS="function"
>exec()</B
></A
> or
     <A
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><B
CLASS="function"
>system()</B
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> functions, or to the <A
HREF="language.operators.execution.html"
>backtick
     operator</A
>. A standard use would be:</P
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>$e = escapeshellcmd($userinput);
system("echo $e"); // here we don't care if $e has spaces
$f = escapeshellcmd($filename);
system("touch \"/tmp/$f\"; ls -l \"/tmp/$f\""); // and here we do, so we use quotes</PRE
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    </P
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>&#13;     See also <A
HREF="function.escapeshellarg.html"
><B
CLASS="function"
>escapeshellarg()</B
></A
>, <A
HREF="function.exec.html"
><B
CLASS="function"
>exec()</B
></A
>, 
     <A
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><B
CLASS="function"
>popen()</B
></A
>, <A
HREF="function.system.html"
><B
CLASS="function"
>system()</B
></A
>, and the <A
HREF="language.operators.execution.html"
>backtick operator</A
>.
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