PHP MySQL Where Clause

From http://www.w3schools.com (Copyright Refsnes Data)

# PHP MySQL The Where Clause

The WHERE clause is used to filter records.

## The WHERE clause

The WHERE clause is used to extract only those records that fulfill a specified criterion.

### Syntax

    SELECT column_name(s)
    FROM table_name
    WHERE column_name operator value

To learn more about SQL, please visit our SQL tutorial.

To get PHP to execute the statement above we must use the mysql_query() function. This function is used to send a query or command to a MySQL connection.

### Example

The following example selects all rows from the "Persons" table where "FirstName='Peter':

    <?php
    $con = mysql_connect("localhost","peter","abc123");
    if (!$con)
      {
      die('Could not connect: ' . mysql_error());
      }

    mysql_select_db("my_db", $con);

    $result = mysql_query("SELECT * FROM Persons
    WHERE FirstName='Peter'");

    while($row = mysql_fetch_array($result))
      {
      echo $row['FirstName'] . " " . $row['LastName'];
      echo "<br />";
      }

    ?>

The output of the code above will be:

    Peter Griffin

From http://www.w3schools.com (Copyright Refsnes Data)