Arrays in PL/pgSQL routines?

<div class="Section1"><p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size:10.0pt;
font-family:Verdana">Can arrays be declared in PL/pgSQL routines?  If so, how?</span></font><p class="MsoNormal"><font
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font-family:Verdana"> </span></font><p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size:10.0pt;
font-family:Verdana">Section 8.10 of the documentation (<a
href="http://www.postgresql.org/docs/7.4/static/arrays.html">http://www.postgresql.org/docs/7.4/static/arrays.html</a>)
tellshow to declare and use arrays as table columns.  But I don’t find any part of the documentation that says how to
declarea simple array local to a PL/pgSQL function.  I tried the following guess, but it only won me a “syntax error at
ornear VARCHAR:</span></font><p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size:10.0pt; 
font-family:Verdana"> </span></font><p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size:10.0pt;
font-family:Verdana">DECLARE</span></font><p class="MsoNormal"><font face="Verdana" size="2"><span
style="font-size:10.0pt;
font-family:Verdana">  my_array VARCHAR [];</span></font><p class="MsoNormal"><font face="Verdana" size="2"><span
style="font-size:10.0pt;
font-family:Verdana">  …</span></font><p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size:10.0pt;
font-family:Verdana"> </span></font><p class="MsoNormal"><font face="Verdana" size="2"><span style="font-size:10.0pt;
font-family:Verdana">~ TIA</span></font><p class="MsoNormal"><font face="Verdana" size="2"><span
style="font-size:10.0pt;
font-family:Verdana">~ Ken</span></font></div>