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<HTML
><HEAD
><TITLE
>Execution Operators</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="Operators"
HREF="language.operators.html"><LINK
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><BODY
CLASS="sect1"
BGCOLOR="#FFFFFF"
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ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
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BORDER="0"
CELLPADDING="0"
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><TR
><TH
COLSPAN="3"
ALIGN="center"
>PHP Manual</TH
></TR
><TR
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><A
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>Prev</A
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>Chapter 10. Operators</TD
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><DIV
CLASS="sect1"
><H1
CLASS="sect1"
><A
NAME="language.operators.execution"
>Execution Operators</A
></H1
><P
> PHP supports one execution operator: backticks (``). Note that
these are not single-quotes! PHP will attempt to execute the
contents of the backticks as a shell command; the output will be
returned (i.e., it won't simply be dumped to output; it can be
assigned to a variable).
<DIV
CLASS="informalexample"
><A
NAME="AEN3129"
></A
><P
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
> $output = `ls -al`;
echo "<pre>$output</pre>";
</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
>
</P
><P
> See also <A
HREF="function.system.html"
><B
CLASS="function"
>system()</B
></A
>,
<A
HREF="function.passthru.html"
><B
CLASS="function"
>passthru()</B
></A
>, <A
HREF="function.exec.html"
><B
CLASS="function"
>exec()</B
></A
>,
<A
HREF="function.popen.html"
><B
CLASS="function"
>popen()</B
></A
>, and
<A
HREF="function.escapeshellcmd.html"
><B
CLASS="function"
>escapeshellcmd()</B
></A
>.
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
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BORDER="0"
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><A
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>Prev</A
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>Home</A
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