WHERE clause is used to filter records.
WHERE clause
WHERE clause is used to extract records that meet the specified criteria are.
grammar
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 mysqli_query () function. This function is used to send a query or command to the MySQL.
Examples
The following "Persons" table select instances from all rows FirstName = 'Peter' is:
$con=mysqli_connect("localhost","username","password","database");
// detect the connection
if (mysqli_connect_errno())
{
echo "connection failed:" mysqli_connect_error ();.
}
$result = mysqli_query($con,"SELECT * FROM Persons
WHERE FirstName='Peter'");
while($row = mysqli_fetch_array($result))
{
echo $row['FirstName'] . " " . $row['LastName'];
echo "
";
}
?>
Above will output:
Peter Griffin
View all PHP tutorial article: https://www.codercto.com/courses/l/5.html (edit: Leilin Peng Source: network intrusion deleted)