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PHP MySQL The Where Clause

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Old 05-04-2009, 05:51 PM
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Default PHP MySQL The Where Clause

he 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.

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.

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

$con = mysql_connect("localhost","peter","abc123");
if (!$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 "


The output of the code above will be:
Peter Griffin

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