Mysql Select Query In Php

PHP MySQL Select :

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

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):

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

The following example selects the same data as the example above, but will display the data in an

//HTML table:
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die("Could not connect: " . mysql_error());
}
mysql_select_db("my_db", $con);
$result = mysql_query("SELECT * FROM person");
echo "<table border="1">
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row["FirstName"] . "</td>";
echo "<td>" . $row["LastName"] . "</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($con);
?>

O/P :