PHP MySQL Select

The SELECT statement is used to select data from a database.


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Select Data From a Database Table
The SELECT statement is used to select data from a database.

Syntax
SELECT column_name(s)
FROM table_name

Note: SQL statements are not case sensitive. SELECT is the same as select.

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 the data stored in the "Person" table (The * character selects all of the data in the table):

$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}mysql_select_db("my_db", $con);$result = mysql_query("SELECT * FROM person");while($row = mysql_fetch_array($result))
{
echo $row['FirstName'] . " " . $row['LastName'];
echo "
";
}mysql_close($con);
?>

The example above stores the data returned by the mysql_query() function in the $result variable. Next, we use the mysql_fetch_array() function to return the first row from the recordset as an array. Each subsequent call to mysql_fetch_array() returns the next row in the recordset. The while loop loops through all the records in the recordset. To print the value of each row, we use the PHP $row variable ($row['FirstName'] and $row['LastName']).

The output of the code above will be:

Peter Griffin
Glenn Quagmire


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Display the Result in an HTML Table
The following example selects the same data as the example above, but will display the data in an HTML table:

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

mysql_select_db("my_db", $con);

$result = mysql_query("SELECT * FROM person");

echo "



";while($row = mysql_fetch_array($result))
{
echo "";
echo "";
echo "";
echo "";
}
echo "

Firstname	Lastname
" . $row['FirstName'] . "	" . $row['LastName'] . "

";mysql_close($con);
?>

The output of the code above will be:

Firstname Lastname
Glenn Quagmire
Peter Griffin