Looping a Function like Wordpress have_posts - php

Question

I am trying to loop a function through while similar to WordPress. I use the function to return a boolean of true or false. Now here is my function. Now, with it only returning true or false, I know that I have to get my function has_rows(); to change to false after it looks through all my rows. Is this possible?
So I guess my question is if it is possible, and how, to loop the a function in a while loop like the below example. I know it is possible because wordpress uses a function, my question is how.
THIS is what I have tried. And the loop wont stop.
function has_rows () {
global $Q_INFO;
global $DB_CONN;
static $COUNT; // STATIC TO REMEMBER LAST TIME FUNCTION CALLED
$COUNT = #$COUNT ? $COUNT++ : 0; // IF NOT SET, SET TO 0 AND COUNT EACH LOOP
echo $QUERY = "SELECT * FROM `" . $Q_INFO['table'] . "` LIMIT " . $COUNT . ", 1";
$STMT = $DB_CONN->prepare($QUERY);
$STMT->execute();
$RESULT = $STMT->get_result();
$STMT->close();
if ($RESULT->num_rows > 0) {
return true;
} else {
return false;
}
}
Im calling it just like in wordpress:
<?php if (has_rows()):?>
<?php while (has_rows()): ?>
Hi World!!
<?php endwhile; ?>
<?php endif; ?>
HERE IS MY FINAL CODE:
I had to add another static variable for the very first call of the function in if(has_rows()): and then I used the selected answer below to do the rest.
Thanks for the help guys!
function has_rows () {
global $Q_INFO;
global $DB_CONN;
static $I = 0;
static $COUNT = 0;
if ($I == 0) {
$QUERY = "SELECT * FROM `" . $Q_INFO['table'] . "`";
$I++;
} else {
$QUERY = "SELECT * FROM `" . $Q_INFO['table'] . "` LIMIT " . $COUNT . ", 1";
$COUNT++;
}
$STMT = $DB_CONN->prepare($QUERY);
$STMT->execute();
$RESULT = $STMT->get_result();
$STMT->close();
if ($I != 0) {
while ($ROW = $RESULT->fetch_assoc()) {
foreach ($ROW as $KEY=>$VALUE) {
$Q_INFO[$KEY] = $VALUE;
}
}
}
if ($RESULT->num_rows > 0) {
return true;
} else {
return false;
}
}

Answer 1

The first time you run it, $COUNT is 0, which evaluates to boolean false. So, $COUNT = #$COUNT ? $COUNT++ : 0; sets it to 0 again.
Just take out that line, explicitly initialize $COUNT to 0, and put $COUNT++; right before your final if statement.
function has_rows () {
global $Q_INFO;
global $DB_CONN;
static $COUNT = 0; // STATIC TO REMEMBER LAST TIME FUNCTION CALLED
// Other code here...
$COUNT++;
if ($RESULT->num_rows > 0) {
return true;
} else {
return false;
}
}

Answer 2

If your trying just to walk over an array, like the wordpress does, try this:
$posts = array('post1', 'post2', 'post3');
function has_posts()
{
// this line will make sure that you have a non empty array
if ( ! is_array($posts) or ! count($posts)) return false;
else return each($posts);
}
while ($post = has_posts())
{
echo $post;
}