[L]To select only data that matches a specified criteria, add a WHERE clause to the SELECT statement.
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The WHERE clause
To select only data that matches a specific criteria, add a WHERE clause to the SELECT statement.
Syntax
The following operators can be used with the WHERE clause:
Note: SQL statements are not case sensitive. WHERE is the same as where.
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 will select all rows from the "Person" table, where FirstName='Peter':
The output of the code above will be:
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SELECT column FROM table
WHERE column operator value <?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
$result = mysql_query("SELECT * FROM person
WHERE FirstName='Peter'");
while($row = mysql_fetch_array($result))
{
echo $row['FirstName'] . " " . $row['LastName'];
echo "<br />";
}
?>Peter Griffin 