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CloseShow selected option value from Array & MySQL DB using PHP
In this tutorial, you will learn how to create an array of categories, display the values inside HTML select box and have selected option pre-defined with PHP and also I will show you how to get selected option from a database using the ID of the record.
Full project code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Select Option Dropdown</title>
</head>
<body>
<style>
body {
font-size: 2em;
}
.container {
display: grid;
grid-template-rows: repeat(2, 1fr);
grid-template-columns: repeat(2, 1fr);
grid-gap: 6rem;
padding: 5rem;
border: 1px solid #ccc;
justify-content: space-evenly;
}
select {
font-size: 1em;
}
</style>
<div class="container">
<div>Selected From Array</div>
<div>Selected From DB Record</div>
<div>
<?php
$selected = "Adult";
$options = array('Comedy', 'Adventure', 'Drama', 'Crime', 'Adult', 'Horror');
echo "<select>";
foreach($options as $option){
if($selected == $option) {
echo "<option selected='selected' value='$option'>$option</option>";
}
else {
echo "<option value='$option'>$option</option>";
}
}
echo "</select>";
?>
</div>
<div>
<?php
define('DB_SERVER', 'localhost');
define('DB_USERNAME', 'root');
define('DB_PASSWORD', 'password');
define('DB_NAME', 'phplearning');
$link = mysqli_connect(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_NAME);
if($link === false){
die("Error: Could not connect." . mysqli_connect_error());
}
if(isset($_GET['category'])){
$categoryName = $_GET['category'];
$sql = "SELECT * FROM categories WHERE id = $categoryName";
if($result = mysqli_query($link, $sql)) {
if(mysqli_num_rows($result) > 0) {
while($row = mysqli_fetch_array($result)){
$dbselected = $row['category'];
}
// Function frees the memory associated with the result
mysqli_free_result($result);
}
else {
echo "Something went wrong...";
}
}
else {
echo "ERROR: Could not execute $sql." . mysql_error($link);
}
}
$options = array('Comedy', 'Adventure', 'Drama', 'Crime', 'Adult', 'Horror');
echo "<select>";
foreach($options as $option){
if($dbselected == $option) {
echo "<option selected='selected' value='$option'>$option</option>";
}
else {
echo "<option value='$option'>$option</option>";
}
}
echo "</select>";
?>
</div>
</div>
</body>
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