A database holds one or multiple tables.
Create a Database
The CREATE DATABASE statement is used to create a database in MySQL.
Syntax
CREATE
DATABASE database_name
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 creates a database called "my_db":
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
if (mysql_query("CREATE DATABASE my_db",$con))
{
echo "Database created";
}
else
{
echo "Error creating database: " . mysql_error();
}
mysql_close($con);
?>
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
if (mysql_query("CREATE DATABASE my_db",$con))
{
echo "Database created";
}
else
{
echo "Error creating database: " . mysql_error();
}
mysql_close($con);
?>
Create a Table
The
CREATE TABLE statement is used to create a table in MySQL.
Syntax
|
CREATE
TABLE table_name
(column_name1 data_type, column_name2 data_type, column_name3 data_type, .... ) |
We must add the CREATE TABLE statement to the mysql_query() function to execute the command.
Example
The
following example creates a table named "Persons", with three
columns. The column names will be "FirstName", "LastName"
and "Age":|
<?php
$con =
mysql_connect("localhost","peter","abc123");if (!$con) { die('Could not connect: ' . mysql_error()); } // Create database if (mysql_query("CREATE DATABASE my_db",$con)) { echo "Database created"; } else { echo "Error creating database: " . mysql_error(); } // Create table mysql_select_db("my_db", $con); $sql = "CREATE TABLE Persons ( FirstName varchar(15), LastName varchar(15), Age int )"; // Execute query mysql_query($sql,$con); mysql_close($con); ?> |
The data type specifies what type of data the column can hold. For a complete reference of all the data types available in MySQL, go to our complete Data Types reference.
