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_nameWHERE column_name operator value |
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); $result = mysql_query(“SELECT * FROM PersonsWHERE FirstName=’Peter'”); while($row = mysql_fetch_array($result)) { echo $row[‘FirstName’] . ” ” . $row[‘LastName’]; echo “<br />”; } ?> |
The output of the code above will be:
| Peter Griffin |