New to OOP need help

Naez · February 16, 2008

Okay I'm trying to get into OOP so I am trying to re-write this code

On display at http://naez.myftp.org/sqltests.php

<?php
// Testing some basic database functions

include ('mysqlconnect.php');

}

// selecting information from the forum_id that == our site news
$sql1 = "SELECT * FROM phpbb_topics WHERE forum_id = '8' ORDER BY topic_id DESC LIMIT 5";
$result1 = mysql_query($sql1);

// now we will display the 5 that we chose.
while ($row1 = mysql_fetch_array($result1)) {
echo "<b>" . $row1['topic_title'] . "</b> - ";

	$sql2 = "SELECT * FROM phpbb_users WHERE user_id = '" . $row1['topic_poster'] . "'";
	$result2 = mysql_query($sql2);
	$row2 = mysql_fetch_array($result2);

	echo "by: " . $row2['username'] . "<br>";

/* Grabbing all the info regarding posts where our topic_id's match, 
	whats good is it automatically picks the first post in the topic
	so it's real easy											*/

	$sql3 = "SELECT * FROM phpbb_posts WHERE topic_id = '" . $row1['topic_id'] . "'";
	$result3 = mysql_query($sql3);
	$row3 = mysql_fetch_array($result3);
echo nl2br($row3['post_text']) . "<br /><br />";

}

?>

So I'm thinking that especially within the main loop some Objects would make this easier so im trying to write that but im not very good, this is wha i have so far.

On display @ http://naez.myftp.org/tester.php

<?php
include 'mysqlconnect.php';
include 'dbstuffclass.php';


$where = "forum_id = '8' ORDER BY topic_id DESC LIMIT 5";
$table = "phpbb_topics";
$dbobject = new dbstuff($table, $where);

echo $dbobject->showData();

?>

dbstuffclass.php

<?php
class dbstuff {
var $table_name;        // table we'll pull data from
var $where_statement;   // our WHERE sql statement
  	var $data_array;        // data from the database
  	var $errors;            // array of error messages

function dbstuff($table, $where) {
	$this->table_name = $table;
	$this->where_statement = $where;	


		if (empty($this->where_statement)){
			$where_str = NULL;
		} else {
			$where_str = "WHERE " . $this->where_statement;
		}

  $query = "SELECT * FROM " .  $this->table_name . " " . $where_str;
      $result = mysql_query($query);
      $this->data_array = $result;
}

function showData() {
	while ($showdata = mysql_fetch_array($this->data_array)) {
		foreach ($showdata as $key => $value) {
   		 		echo "Key: ". $key . " Value: " . $value . "<br />\n";
	 	}
	 }
}
}

class db2stuff extends dbstuff
{
	// omg i need halp
}
?>

I hope I made it clear what i'm trying to do here... I've never really dabbled into OOP so I'm in over my head <0>.. if someone could provide some examples on how to go about doing this that would be super awesome pawsum

able · February 17, 2008

It vaguelly looks like you are trying to invent the active record pattern.

A quick google for php active record should give you all sorts of help :-)

Naez · February 17, 2008

Yea now that I'm a little bit more acquainted with OOP im not sure what I was trying to do there >.>

Anyways here's my first "real" OOP PHP class!

[code=php:0]<?php
class mailingList {
var $email;
var $errors;
var $code;
var $customMsg;
var $customSubj;
var $action;

// if we have the email adress already, we'll do stuff with it, otherwise we'll display the form.
function __construct() {
	// if we get the email in the .php?email= we will send it along to our validator/mailer or if an action is specified perform it
	if (isset($_GET['email'])){
		$this->email = addslashes($_GET['email']);

		$act = $_GET['action'];

		switch ($act){
		case "validate":
			// we have gotten an email coming in and we'll validate it now.
			$this->code = $_GET['rancode'];
			$sql = "SELECT * FROM mailinglist WHERE randomcode='" . $this->code . "'";
			$result = mysql_query($sql);
			$row = mysql_fetch_array($result);
				// woops! there was no randomcode that matched our $_GET so we'll show the form again, so the person can type their
				if (!$row){ 
					$this->errors = "That was not a valid code.";
					$this->showform();
				} else {
				// success! the codes match and thus the account will be activated
					$query = "UPDATE mailinglist SET active=1 WHERE randomcode='" . $this->code . "'";
					mysql_query($query);
					echo "Your email <b>" . $this->email . "</b> has been validated and is now in our mailing list.";
				}
		break;
		case "resend":
			// this is if the person needs to get the confirmation email resent.
			$sql = "SELECT * FROM mailinglist WHERE email='" . $this->email . "'";
			$result = mysql_query($sql);
			$row = mysql_fetch_array($result);
				// ruh roh! there is no email by that name!! show the form!
				if (!$row){ 
					$this->errors = "An error occured when searching for your email.";
					$this->showform();
				} else {
				// okay everything looks good so we'll send a custom email with the link to validate their email.
					$this->code = $row['randomcode'];
					$this->customMsg = "This email was sent to activate your email to recieve our newsletter.";
					$this->customSubj = "Confirmation Resent regarding mailing list.";
					$this->action = "validate";
					$this->confirmationEmail();
				}
		break;
		case "remove";
			// this is if someone wants to remove their email from our mailing list.
			$this->code = $_GET['rancode'];
			$sql = "SELECT * FROM mailinglist WHERE email='" . $this->email . "'";
			$result = mysql_query($sql);
			$row = mysql_fetch_array($result);
			// is there a code in the $_GET?  If not we'll see whatsup.
			if ($this->code){ 

				if (!$row){ 
					// okay that email doesnt even exist... someone must be trying to fool the system!
					$this->errors = "An error occured when searching for your email.";
					$this->showform();
				} else {
					// okay since theres an email we'll do a check if the codes match
					if ($this->code == $row['randomcode']){
						$query = "UPDATE mailinglist SET active=0 WHERE randomcode='" . $this->code . "'";
						mysql_query($query);
						echo "Your email <b>" . $this->email . "</b> has been removed from our mailing list.";
					} else {
						$this->errors = "Your code did not match ours.";
						$this->showform();
					}
				}
			} else {
				// since no code has been entered yet, we must believe they want a confirmation to delete!
				$this->code = $row['randomcode'];
				$this->customMsg = "This email was sent because you wish to be removed from our mailing list.";
				$this->customSubj = "Remove from our Mailing list.";
				$this->action = "remove";
				$this->confirmationEmail();
			}
		break;
		default:
			// no action specified or an invalid one results in basically our first validation email being sent if the email passes.
			$this->firstmail($this->email);
		}
	} else {
	// An email has not been supplied so we'll show our form.
		$this->showform();	
	}
}

public function showform() {
	// just our form, it gets shown alot and is nothing special!!
	echo "Sign up for the " . $_SERVER['HTTP_HOST'] . " mailing list?<br />";
	echo $this->errors;
	echo '<form action="' . $_SERVER['PHP_SELF'] . '" method="get">';
	echo '<input type="hidden" name="mode" value="mailinglist" />';
	echo '<input type="text" name="email" />';
	echo '<input type="submit" name="submit" value="submit" />';
}

public function firstmail($email) {
	// the function that happens when a new email is entered into our form.  Check if the email is valid
	if ($this->validateEmail($this->email)){

		if (!$this->errors){
			// double check for errors! if not we'll go ahead and enter it into our database and send an email
			// with a link to confirm the address!
			$randomcode = new randomGen(10);
			$this->code = $randomcode->key;
			$sql = "INSERT INTO mailinglist (`email`, `randomcode`) VALUES ('" . $this->email . "', '" . $this->code . "')";
			$result = mysql_query($sql);
			$this->customMsg = "Our records show that " . $this->email . " has signed up for our newsletter."; 
			$this->customSubj = "Confirm Signup to the Newsletter";
			$this->action = "validate";
			$this->confirmationEmail();
		}


	} else {
		// failed inspection
		$this->showform();

	}
}

public function confirmationEmail() {
	// a generic email that thanks to OOP we can make it very custom!		
	echo "An email has been dispatched to <b>" . $this->email . "</b>. <br><br>";
	echo "Please follow the link within it to confirm your action.";
	$link = "http://" .$_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'] . "?mode=mailinglist&email=" . $this->email . "&action=" . $this->action . "&rancode=" . $this->code;
	$to      = $this->email;
	$subject = $this->customSubj;
	$message = $this->customMsg . "\n\n" . ' Follow this link: ' . $link;
	$headers = 'From: ' . $_SERVER['HTTP_HOST'] . "\r\n" .
	'Reply-To: noreply@' . $_SERVER['HTTP_HOST'];

	mail($to, $subject, $message, $headers);

}

public function validateEmail($email) {
/*
*  This function checks if an email is valid.. Syntax:
*	validateEmail($_GET['email]);
*	if(!validateEmail($_GET['email']) { include('whatever.php'); exit(); }
*/
	if (!preg_match("/^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-]+)*\.([a-zA-Z]{2,6})$/", $email)){
	// if it passes this stage (aka being a real email or at least looking like one, we'll check if its in our db yet
		$this->errors = "Email is not valid.";
		return false;

	} else {
	 	// check if its in our db yet
	 	$sql = "SELECT * FROM mailinglist WHERE email='" . $email . "'";
		$result = mysql_query($sql);
		$num_rows = mysql_num_rows($result);
		if ($num_rows == 0){ 
			// its not in our db and looks like a valid email so we'll let it pass
			return true;
		} else {
			// ruh roh its already in our DB!  both of these will return false but we want a custom error msg
			$row = mysql_fetch_array($result);
				if ($row['active'] == 0){
				// 0 specifies that this email is not active... so we'll see whatsup.
					$this->errors = "Email is already in our database, but inactive. Click <a href=\"" . $_SERVER['PHP_SELF'] . "?mode=mailinglist&action=resend&email=" . $this->email . "\">here</a> to resend the validation email.";
				} else {
				// obviously its an active email... perhaps the person wants to remove themselve
					$this->errors = "Email is in our database, and active.  Click <a href=\"" . $_SERVER['PHP_SELF'] . "?mode=mailinglist&action=remove&email=" . $this->email . "\">here</a> to remove yourself from the mailing list.";
				}
				// by returning false the form will get shown wit our custom error msg imo!
			return false;

		}

	}
} // end of function

} // end of class

class randomGen {
/*
*	randomGen creates a random number/letter combination
*	$mybox = new randomGen(20);
*	echo $mybox->key;
*/
public $key;

function __construct($length) {
	$this->key=$this->keygen($length);
}

private function keygen($length){
	$letters='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
		for($i=0; $i<$length; $i++){
			$out.=$letters{rand(0,61)};
		}
	return $out;
}	
}
?>

[/code]

Little messy but works great!

in case anyone is wondering my database is structed like this

[pre]

id active email randomcode

1 1 [email protected] S3dS23fsads

2 0 [email protected] asd2Dwasd2

3 1 [email protected] c4w5fds345[/pre]

Sign In

New to OOP need help

Recommended Posts

Naez

Link to comment

Share on other sites

able

Link to comment

Share on other sites

Naez

Link to comment

Share on other sites

Archived

Browse

Activity

Important Information