Created
December 6, 2018 08:41
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<?php include "../inc/dbinfo.inc"; ?> | |
<html> | |
<body> | |
<h1>Sample page</h1> | |
<?php | |
/* Connect to MySQL and select the database. */ | |
$connection = mysqli_connect(DB_SERVER, DB_USERNAME, DB_PASSWORD); | |
if (mysqli_connect_errno()) echo "Failed to connect to MySQL: " . mysqli_connect_error(); | |
$database = mysqli_select_db($connection, DB_DATABASE); | |
/* Ensure that the Employees table exists. */ | |
VerifyEmployeesTable($connection, DB_DATABASE); | |
/* If input fields are populated, add a row to the Employees table. */ | |
$employee_name = htmlentities($_POST['Name']); | |
$employee_address = htmlentities($_POST['Address']); | |
if (strlen($employee_name) || strlen($employee_address)) { | |
AddEmployee($connection, $employee_name, $employee_address); | |
} | |
?> | |
<!-- Input form --> | |
<form action="<?PHP echo $_SERVER['SCRIPT_NAME'] ?>" method="POST"> | |
<table border="0"> | |
<tr> | |
<td>Name</td> | |
<td>Address</td> | |
</tr> | |
<tr> | |
<td> | |
<input type="text" name="Name" maxlength="45" size="30" /> | |
</td> | |
<td> | |
<input type="text" name="Address" maxlength="90" size="60" /> | |
</td> | |
<td> | |
<input type="submit" value="Add Data" /> | |
</td> | |
</tr> | |
</table> | |
</form> | |
<!-- Display table data. --> | |
<table border="1" cellpadding="2" cellspacing="2"> | |
<tr> | |
<td>ID</td> | |
<td>Name</td> | |
<td>Address</td> | |
</tr> | |
<?php | |
$result = mysqli_query($connection, "SELECT * FROM Employees"); | |
while($query_data = mysqli_fetch_row($result)) { | |
echo "<tr>"; | |
echo "<td>",$query_data[0], "</td>", | |
"<td>",$query_data[1], "</td>", | |
"<td>",$query_data[2], "</td>"; | |
echo "</tr>"; | |
} | |
?> | |
</table> | |
<!-- Clean up. --> | |
<?php | |
mysqli_free_result($result); | |
mysqli_close($connection); | |
?> | |
</body> | |
</html> | |
<?php | |
/* Add an employee to the table. */ | |
function AddEmployee($connection, $name, $address) { | |
$n = mysqli_real_escape_string($connection, $name); | |
$a = mysqli_real_escape_string($connection, $address); | |
$query = "INSERT INTO `Employees` (`Name`, `Address`) VALUES ('$n', '$a');"; | |
if(!mysqli_query($connection, $query)) echo("<p>Error adding employee data.</p>"); | |
} | |
/* Check whether the table exists and, if not, create it. */ | |
function VerifyEmployeesTable($connection, $dbName) { | |
if(!TableExists("Employees", $connection, $dbName)) | |
{ | |
$query = "CREATE TABLE `Employees` ( | |
`ID` int(11) NOT NULL AUTO_INCREMENT, | |
`Name` varchar(45) DEFAULT NULL, | |
`Address` varchar(90) DEFAULT NULL, | |
PRIMARY KEY (`ID`), | |
UNIQUE KEY `ID_UNIQUE` (`ID`) | |
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1"; | |
if(!mysqli_query($connection, $query)) echo("<p>Error creating table.</p>"); | |
} | |
} | |
/* Check for the existence of a table. */ | |
function TableExists($tableName, $connection, $dbName) { | |
$t = mysqli_real_escape_string($connection, $tableName); | |
$d = mysqli_real_escape_string($connection, $dbName); | |
$checktable = mysqli_query($connection, | |
"SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_NAME = '$t' AND TABLE_SCHEMA = '$d'"); | |
if(mysqli_num_rows($checktable) > 0) return true; | |
return false; | |
} | |
?> |
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