Add to an array at the end of a loop - php

Question

What I want at the end of this code is an array which keeps adding to give and array with all $id in one array.
At the moment the code does 15 in the array, then gets overwritten by the next 15 items. I want to be able to an array at the end of the code which has 30 items in the array.
My code below:
$idArray = array();
do {
$html = file_get_html($url);
parseItems($html, $dbh);
sleep_flush($chunks=1); // ADJUST LATER
}
while (!empty($html->find('span[class=load-more-message]', 0)));
$html->clear();
unset($html);
// -------------------------------------------------
function parseItems($html, $dbh) {
foreach($html->find('div.product-stamp-inner') as $content) {
$detail['itemid'] = filter_var($content->find('a.product-title-link', 0)->href, FILTER_SANITIZE_NUMBER_FLOAT);
$id = $detail['itemid'];
$idArray[] = $id; //Counting and adding items to an array
$detail['title'] = $content->find('span.title', 0)->plaintext;
$description = $detail['title'];
if (!tableExists($dbh, $id, $detail)) {
echo $id . " > " . $description . "> Table does not exist >";
createTable($dbh, $id, $description);
insertData($dbh, $id, $detail);
echo "<br>";
} else {
echo $id . " > " . $description . "> Table already exists >";
checkData($dbh, $id, $detail);
echo "<br>";
}
}
print_r($idArray);
}

Answer 1

This is, because you redefine your $idArray here:
$idArray = array();
You could either make your $idArray global/member variable of the class.. or you can pass the parameter by reference:
$idArray = array();
do {
$html = file_get_html($url);
parseItems($html, $dbh, $idArray);
sleep_flush($chunks=1); // ADJUST LATER
}
while (!empty($html->find('span[class=load-more-message]', 0)));
$html->clear();
unset($html);
// -------------------------------------------------
function parseItems($html, $dbh, &$idArray) {
foreach($html->find('div.product-stamp-inner') as $content) {
$detail['itemid'] = filter_var($content->find('a.product-title-link', 0)->href, FILTER_SANITIZE_NUMBER_FLOAT);
$id = $detail['itemid'];
$idArray[] = $id; //Counting and adding items to an array
$detail['title'] = $content->find('span.title', 0)->plaintext;
$description = $detail['title'];
if (!tableExists($dbh, $id, $detail)) {
echo $id . " > " . $description . "> Table does not exist >";
createTable($dbh, $id, $description);
insertData($dbh, $id, $detail);
echo "<br>";
} else {
echo $id . " > " . $description . "> Table already exists >";
checkData($dbh, $id, $detail);
echo "<br>";
}
}
print_r($idArray);
}