brianm (dev) ~ # cat memcached2.php
<?php

$pid = getmypid();

for($x=0;$x<20;$x++) {

    $mc = new Memcached("test");
    if ( count( $mc->getServerList() ) < 1 )
        $mc->addServer("localhost", 11211);
    $mc->get("foo");
    unset($mc);

    $connections = `lsof -n -p $pid | fgrep -c "11211"`;

    echo "$x: $connections";
}

?>
brianm (dev) ~ # php memcached2.php
0: 1
1: 1
2: 1
3: 1
4: 1
5: 1
6: 1
7: 1
8: 1
9: 1
10: 1
11: 1
12: 1
13: 1
14: 1
15: 1
16: 1
17: 1
18: 1
19: 1
brianm (dev) ~ # cat memcache.php
<?php

$pid = getmypid();

for($x=0;$x<20;$x++) {

    $mc = new Memcache();
    $mc->addServer("localhost", 11211, true);
    $mc->get("foo");
    unset($mc);

    $connections = `lsof -n -p $pid | fgrep -c "11211"`;

    echo "$x: $connections";
}

?>
brianm (dev) ~ # php memcache.php
0: 1
1: 1
2: 1
3: 1
4: 1
5: 1
6: 1
7: 1
8: 1
9: 1
10: 1
11: 1
12: 1
13: 1
14: 1
15: 1
16: 1
17: 1
18: 1
19: 1