Draw rectangle

<?php  
$cmd = " -size 200x185 xc:none ".
"-fill grey39 -draw \"rectangle 47,0 102,20\" ".
"-fill grey39 -draw \"rectangle 157,0 176,185\" ".
"-fill red -draw \"rectangle 0,16 200,73\" ".
"-fill silver -draw \"rectangle 10,36 167,145\" ".
"-fill blue -draw \"rectangle 130,0 150,185\" ".
"-fill brown -draw \"rectangle 72,110 200,137\" ".
"-fill grey26 -draw \"rectangle 0,99 56,185\" ".
"-fill grey39 -draw \"rectangle 81,102 120,185\" ".
"-fill green -draw \"rectangle 30,164 200,177\" "; 
exec("convert $cmd output.png"); 
?>