Human readable password function

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<?php
/**
 * Creates human readable passwords
 * TODO: filter not desired phrases
 * @param unknown_type $length
 * @return unknown
 */

function com_dir_create_password($length = 10){
    global $strength;

    $conso = array("b","c","d","f","g","h","j","k","m","n","p","r","s","t","v","w","x","y","z");
    $numeric = array(2,3,4,5,6,7,8,9);
    $vocal = array("a","e","i","o","u");
    $password = "";
    srand ((double)microtime()*1000000);
   
    $templength = ($length % 2) ? $length -1 : $length -2;
    $max = $templength/2;

    for($i=1; $i<=$max; $i++)
    {
        $password.=$conso[rand(0,19)];
        $password.=$vocal[rand(0,4)];
    }

    $len = strlen($password);
    $halv = $len/2;
    $p1 = substr($password, 0, $halv);
    $p2 = substr($password, $halv, ($len - $halv));
    $p3 = $numeric[rand(0,7)]. (($length % 2) ? '' : $numeric[rand(0,7)]);
   
    $strength = 4.7*$len + 2*3.32;

    $newpass = $password;
   
    return $p1.$p3.$p2;
}
?>
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