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<?php
function foo() {
static $data = array(
array('site_name' => 'bar'),
array(),
array('site_name' => 'baz')
);
$current = current($data);
next($data);
return $current;
}
while ($bar = foo()) echo $bar['site_name']."\n";
echo '-------------------------------------------'."\n";
while (($bar = foo()) !== false) echo $bar['site_name']."\n";