PHP Programming Question. Use the techniques you learned so far to create an Address Book application...

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PHP Programming Question. Use the techniques you learned so far to create an Address Book application...

PHP Programming Question.

Use the techniques you learned so far to create an Address Book application that stores names, e-mail addresses, and phone numbers in a text file. Validate all input fields and include functionality that allows the user to view the address book. Also, include code that sorts the address book by name and deletes duplicate entries.

Each page in the application should have a link back to the main page.

Be creative and add extra features if you want but make sure the minimum requirements are complete first.

At a minimum observe the following standards:

- Complete - The application works and performs as expected. No run time errors.

- Style - good convention, programming style, readability. Include appropriate comments in the code.

- Validation - check for missing and malformed data.

- Documentation - List and describe the features of the application. Imagine them being on the outside of a product box. They can be in bullet form.

Additional information:

First of all, HTML should be well-formed with appropiate attributes like title. Here is a short guide that you should follow.
http://www.w3schools.com/html/html5_syntax.asp

Here are some points on PHP Coding Style that will be enforced in homework and projects.

- Indentation (tabs) should be 4 spaces.
- Be consistant with variable names. You can use camel case or _ to delimit words, but don't switch. I use camel case.
- Constant names should be UPPERCASE, with an UNDER_SCORE between words.    
- Every function should have a comment explaining what it does
- Keep functions to about 30 lines at most. This rule forces you to break up long functions into smaller, more succince functions.
- A comment explaining the purpose of a script should be in a standard format. Here is an example        

/**
   Script to manipulate widgets.
   Solves homework assignment #3
   @author Harry Hacker
   @version 1.01 2015-02-15
*/

- Include a document block before every function, indicating the purpose and describing the parameters. Fro example: 

/**
 * Calls var_dump for a variable wrapped in &lt;pre&gt;
 * @param $Var - variable to be displayed
 * @param $Name - name of the variable
 * @return void
 * @author  Mick Jagger
 */
function myVarDump($Var, $Name) 

- Leave a blank line after every function
- Define each variable just before it is used for the first time
- Do not define two variables on the same line:
- Use blank lines to separate parts of a method that are logically distinct.
- If a statement takes more than one line, add an indentation level for the continuation
- Comments should be used to indicate what the code is doing.

engineering Computer-Science

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Answer 1

Answer #1

Address Book Name Phone Email Admin Add Contact Alexa 430-555-2252 suhine@ fakeaddress.comEdit Remove Edit Remove Edit Remove

To create this database you need to execute this code:

CREATE TABLE address (id INT(4) NOT NULL AUTO_INCREMENT PRIMARY KEY, name VARCHAR(30), phone VARCHAR(30), email VARCHAR(30));
INSERT INTO address (name, phone, email) VALUES ( "Alexa", "430-555-2252", "[email protected]"), ( "Devie", "658-555-5985", "[email protected]" )

Connect to the Database

<html>
<head>
<title>Address Book</title>
</head>
<body>

<?php // Connects to your Database mysql_connect("your.hostaddress.com", "username", "password") or die(mysql_error()); mysql_select_db("address") or die(mysql_error());

Add a Contact

if ( $mode=="add")
{
Print '<h2>Add Contact</h2>
<p>
<form action=';
echo $PHP_SELF;
Print '
method=post>
<table>
<tr><td>Name:</td><td><input type="text" name="name" /></td></tr>
<tr><td>Phone:</td><td><input type="text" name="phone" /></td></tr>
<tr><td>Email:</td><td><input type="text" name="email" /></td></tr>
<tr><td colspan="2" align="center"><input type="submit" /></td></tr>
<input type=hidden name=mode value=added>
</table>
</form> <p>';
}
if ( $mode=="added")
{
mysql_query ("INSERT INTO address (name, phone, email) VALUES ('$name', '$phone', '$email')");
}

Updating Data

if ( $mode=="edit")
{
Print '<h2>Edit Contact</h2>
<p>
<form action=';
echo $PHP_SELF;
Print '
method=post>
<table>
<tr><td>Name:</td><td><input type="text" value="';
Print $name;
print '" name="name" /></td></tr>
<tr><td>Phone:</td><td><input type="text" value="';
Print $phone;
print '" name="phone" /></td></tr>
<tr><td>Email:</td><td><input type="text" value="';
Print $email;
print '" name="email" /></td></tr>
<tr><td colspan="2" align="center"><input type="submit" /></td></tr>
<input type=hidden name=mode value=edited>
<input type=hidden name=id value=';
Print $id;
print '>
</table>
</form> <p>';
}
if ( $mode=="edited")
{
mysql_query ("UPDATE address SET name = '$name', phone = '$phone', email = '$email' WHERE id = $id");
Print "Data Updated!<p>";
}

Removing Data

if ( $mode=="remove")
{
mysql_query ("DELETE FROM address where id=$id");
Print "Entry has been removed <p>";
}

The Address Book

$data = mysql_query("SELECT * FROM address ORDER BY name ASC")
or die(mysql_error());
Print "<h2>Address Book</h2><p>";
Print "<table border cellpadding=3>";
Print "<tr><th width=100>Name</th><th width=100>Phone</th><th width=200>Email</th><th width=100 colspan=2>Admin</th></tr>"; Print "<td colspan=5 align=right><a href=" .$_SERVER[’PHP_SELF’]. "?mode=add>Add Contact</a></td>";
while($info = mysql_fetch_array( $data ))
{
Print "<tr><td>".$info['name'] . "</td> ";
Print "<td>".$info['phone'] . "</td> ";
Print "<td> <a href=mailto:".$info['email'] . ">" .$info['email'] . "</a></td>";
Print "<td><a href=" .$_SERVER[’PHP_SELF’]. "?id=" . $info['id'] ."&name=" . $info['name'] . "&phone=" . $info['phone'] ."&email=" . $info['email'] . "&mode=edit>Edit</a></td>"; Print "<td><a href=" .$_SERVER[’PHP_SELF’]. "?id=" . $info['id'] ."&mode=remove>Remove</a></td></tr>";
}
Print "</table>";
?>
</body>
</html>

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Answer 2

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