fetching data from database in php code example

Example 1: query sql in php

$sql = "SELECT id, firstname, lastname FROM MyGuests";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "<br>";
    }
} else {
    echo "0 results";
}
$conn->close();

Example 2: how to fetch data from database in php

<?php
  ////////////neha jaiswal///
$serve="localhost";
$user="root";
$password="";
$db="neha";
$con=mysqli_connect($serve,$user,$password,$db);
 if ($con) {
 echo "connection success"; 
 }else
{echo "connection unsuccess"; }
 $query="SELECT * FROM product";
 $result=$con->query($query);
 if($result->num_rows>0){
 	while($row=$result->fetch_assoc())
 	{
 		echo $name=$row['name'];
 		echo $qty=$row['qty'];
 		echo	$price=$row['price'];
 		echo	$image=$row['image'];
 	}
 }

?>

Example 3: php code for fetching data from database

<!DOCTYPE html>
<html>
<head>
<title>Read Data From Database Using PHP - Demo Preview</title>
<meta content="noindex, nofollow" name="robots">
<link href="style.css" rel="stylesheet" type="text/css">
</head>
<body>
<div class="maindiv">
<div class="divA">
<div class="title">
<h2>Read Data Using PHP</h2>
</div>
<div class="divB">
<div class="divD">
<p>Click On Menu</p>
<?php
$connection = mysql_connect("localhost", "root", ""); // Establishing Connection with Server
$db = mysql_select_db("company", $connection); // Selecting Database
//MySQL Query to read data
$query = mysql_query("select * from employee", $connection);
while ($row = mysql_fetch_array($query)) {
echo "<b><a href="readphp.php?id={$row['employee_id']}">{$row['employee_name']}</a></b>";
echo "<br />";
}
?>
</div>
<?php
if (isset($_GET['id'])) {
$id = $_GET['id'];
$query1 = mysql_query("select * from employee where employee_id=$id", $connection);
while ($row1 = mysql_fetch_array($query1)) {
?>
<div class="form">
<h2>---Details---</h2>
<!-- Displaying Data Read From Database -->
<span>Name:</span> <?php echo $row1['employee_name']; ?>
<span>E-mail:</span> <?php echo $row1['employee_email']; ?>
<span>Contact No:</span> <?php echo $row1['employee_contact']; ?>
<span>Address:</span> <?php echo $row1['employee_address']; ?>
</div>
<?php
}
}
?>
<div class="clear"></div>
</div>
<div class="clear"></div>
</div>
</div>
<?php
mysql_close($connection); // Closing Connection with Server
?>
</body>
</html>
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