PHP array getting duplicate values - php

Question

I am working on displaying information from my database. When I did print_r in the model/itemTile.php below to check on my array, $this->display, I noticed it had stored 2 copies of the data from my database. I checked my database, and there was definitely only one copy of the data.
I created a counter variable, $this->counter, to see what the surrounding while loop was doing. The original data had 6 non-duplicating rows. As you may see in the jpg attached below, the program increments and echo the counter to 6, then it does the "print_r($this->display)" line that is outside of the while loop, then for some strange reason goes back to the while loop, increment the counter, and print the $this->counter and $this->display again!
I can remove the duplicate, but I would much prefer to figure out why exactly there are two copies of the value to begin with.
Since this was originally a PHP class project that focus on MVC, everything is placed into controller, model, and view. I have included the relevant model and view code below:
Jpg:
PHP Site
model/itemTile.php
<?php
require_once('siteInfo.php');
class itemTile implements siteInfo {
private $term;
private $session;
private $result;
private $display = array();
private $counter = 0;
public function __construct($session) {
$this->session = $session;
}
public function getContent() {
$this->result = $this->session->db->prepare("SELECT productName, sciName, price FROM products");
$this->result->execute();
$this->result->bind_result($pN, $sN, $pz);
while ($this->result->fetch()) {
if (array_key_exists($pN, $this->display)) {
$this->display[$pN]["price"][] = $pz;
} else {
$this->display += [
$pN => [ //Product Name was used to id array because not all item have sciName,
"sciName" => [$sN], //and not all item have only 1 sku (1 item with different size = multiple pid).
"price" => [$pz]
]
];
}
$this->counter++;
echo $this->counter . "<br />";
}
$this->result->close();
print_r($this->display);
echo "<br />";
}
public function setContent() {
$this->getContent();
return $this->display;
}
}
?>
view/itemTile.php
<?php
class itemTileView {
private $model;
public function __construct(itemTile $model) {
$this->model = $model;
}
public function output(){
foreach ($this->model->setContent() as $item => $detail) {
$itemLink = preg_replace('/\s+/','_', $item);
echo "<div class= 'tileSpace'>";
echo "<a href='itemPages/" . $itemLink. "/home.php'>";
echo "<img alt='" . $item . "' src='itemPages/" . $itemLink . "/thumbnail.jpg' width='100' height='100'>";
echo "</a>";
echo "<p>" . $item . ": " . $detail["sciName"][0] . "</p>";
if (count($detail["price"]) > 1) {
echo "<p>" . min($detail["price"]). " - " . max($detail["price"]). "</p>";
} else {
echo "<p>" . $detail["price"][0] . "</p>";
}
echo "</div>";
}
}
}
?>
Can anyone spot where is the problem occurring?

Answer 1

use php function array_unique();
array_unique($arrayname);
using this you will get unique values from array.it avoids duplicate values