How can you query a specific field from a database using PHP?

To query a specific field from a database using PHP, you can use a SELECT statement in your SQL query and specify the field you want to retrieve. This allows you to fetch only the data you need from the database. 

<?php
// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

// Query a specific field from the database
$sql = "SELECT field_name FROM table_name";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  // Output data of each row
  while($row = $result->fetch_assoc()) {
    echo "Field Name: " . $row["field_name"] . "<br>";
  }
} else {
  echo "0 results";
}

$conn->close();
?>

Keywords

PHP database query field specific

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