PHP - Exception Class In Php (is This Magic?)

i have some code which checks to see if a username  and an email is in use. from what i can understand, it uses magic quotes to prevent sql injection. i've heard that magic quotes are not going to be in use in php6, so how can i change it so that it uses real escape string instead?

if (!get_magic_quotes_gpc()) {
$_POST['username'] = addslashes($_POST['username']);
}
$usercheck = $_POST['username'];
$check = mysql_query("SELECT username FROM users WHERE username = '$usercheck'") 
or die(mysql_error());
$check2 = mysql_num_rows($check);
if ($check2 != 0) {
die('Sorry, the username '.$_POST['username'].' is already in use.');
}

if (!get_magic_quotes_gpc()) {
$_POST['email'] = addslashes($_POST['email']);
}
$emailcheck = $_POST['email'];
$check = mysql_query("SELECT email FROM users WHERE email = '$emailcheck'") 
or die(mysql_error());
$check2 = mysql_num_rows($check);
if ($check2 != 0) {
die('Sorry, the email '.$_POST['email'].' is already registered to another account.');
}


Thanks

So, I think you have all heard the news. THEY ARE GONE!

Unfortunately, I do have some old code that I do not feel like going line by line and updating. I was wounding if you guys could help me out.

I was hoping that there would be a way to set a define of some sort then when I grab something out of an SQL table it will automatically takeout the "\" (Slashes) and when I insert something into the database it will add the slashes...

YES I know and have read the statement written by the php group [http://www.php.net/manual/en/securit...uotes.why.php] But i do not particularly want to go through my code and change everything by hand.

If you have any idea, or would like me to explain it another way, please post.

Any help will be greatly appreciated.

--redcrusher

Hi there every one, i'm writing a class that create instances of other classes and I want to use the __call() magic method to make it more compact and dynamic. here is a basic example of what I'm trying to achieve.

The code bellow is the working code.
Code: [Select]
<?php

class creator{
    private $objects = array();
    public function createObj1($param1, $param2, $param3){
        $this->objects[]=new Obj1($param1, $param2, $param3);
    }  
    public function createObj2($param1, $param2){
        $this->objects[]=new Obj2($param1, $param2);
    }  
}
?>

Now I want the same functionality but using just the __call(), something like this
Code: [Select]
<?php
class creator{
    private $objects = array();
    public function __call($name, $args){
        $this->objects[]=new $name($param1, $param2);
    }  
}
?>
So, the main problem is, in the $args variable i get an array with all the args passed,
How can I make the call to create a new object when in the object constructor are individual parameters needed and not an array of parameters.

Thank you in advance.

hey guys i have a __call method in my class...the probelm im having is how to get the arguments into this line

Code: [Select]
return $this->_db->$method($arguments);
if arguments where "test1" and "test2"

i want the call to do

Code: [Select]
return $this->_db->$method("test1", "test2");
the code below will put all arguments into one if anyone can help me on how i can seperate please

Code: [Select]
public function __call($method, $arguments)
{
if (method_exists($this->_db, $method))
{
$arguments = implode(', ', $arguments);

return $this->_db->$method($arguments);
}
}

I have a class that has the __get and __set magic methods defined.  The idea is to use those to communicate with the __get and __set methods in a database table object which is a protected attribute of this class.  Then I can quickly build out models without having to bother with method definitions aside from those that need modifications made to the data before saving.

The problem is, they don't seem to be doing anything.  I get an undefined function error the first time I call getVarx().   I don't actually have any of the attributes I'm trying to get and set defined in the object, but I thought that was the point of these magic methods.  Am I missing something here?

Thanks,
Brandon

I have two classes were one extends the other but they both have magic methods __get __call and __set but when trying to call a magic method it conflicts one with the other as you can imagaine...is there a way of getting around this ie. name spaces   or do I simply have to rewrite my classes   thank you

Is there any way to produce a custom magic method?

Let's say when I try to get an attribute that doesn't have any value, a method gets called that gives that attribute a value.

So I want a method to be triggered when I try to get a value from an attribute that doesn't have any value.

After getting valuable help from DavidAm and wildteen88 I am left with this last piece to the puzzle:

I have created a function which identifies the names of multi-value checkbox fields used on a Post page where a form just filled out has been saved in a serialized array which will contain associative arrays wherever the checkboxes have been selected.

Now I need for the checkbox associative arrays returned on this Review before-final-saving-page to be detected or identified and then Changed to a comma-delimited array, or maybe it just gets converted to one string with commas separating what were parts of the array--I am not sure about that.

At any rate, here are the functions that WORK to do this---but they depend on knowing the specific checkboxes that will show up ahead of time:

 
$postvals['cp_checkbox_amenities']= implode(',', $_POST['cp_checkbox_amenities']);
   $postvals['cp_checkbox_days']= implode(',', $_POST['cp_checkbox_days']);
   $postvals['cp_checkbox_3']= implode(',', $_POST['cp_checkbox_3']);


So I created a function which polls the form and finds the specific names of the checkboxes used on this page--the function ends like this:

        $results = $wpdb->get_results($sql);

        if($results) {

        foreach ($results as $result):
            // now grab all ad fields and print out the field label and value

echo '<li><span>' . $result->field_name . '</li>';

endforeach; 
}

     else {

      echo __('No checkbox details found.', 'cp');

    }
 
}

}

This returns the following:

<li><span>cp_checkbox_help</span></li><li><span>cp_checkbox_charley</span></li><li><span>cp_checkbox_hello</span></li>
</li>


So, I then tried to REPLACE the hard-code functions I show above that take the checkbox arrays and implode them for saving when this form is updated as comma limited values.

I tried various versions of this using the same loop that produced the <li> list with  $result->field_name      :


       foreach ($results as $result):
            // now grab all ad fields and print out the field label and value

   $postvals['. $result->field_name .']= implode(',', $_POST[ '. $result->field_name .']);

endforeach; 
}

     else {

      echo __('No checkbox details found.', 'cp');

    }
 
}

}

Every different way I try to get something either errors out or does not perform the Implode, or notifies me that the Implode is creating problems.

SOMEHOW, dynamically for each loop I need for a ' single quote mark to appear on each side of $result->field_name  so that I have dynamically written in the php code the equivalent to

 
$postvals['cp_checkbox_amenities']= implode(',', $_POST['cp_checkbox_amenities']);
   $postvals['cp_checkbox_days']= implode(',', $_POST['cp_checkbox_days']);
   $postvals['cp_checkbox_3']= implode(',', $_POST['cp_checkbox_3']);

the $result->field_name gives me a cp_checkbox_3  or a cp_checkbox_amenities, etc,, but I cannot break it down so that

$postvals['$result->field_name']= implode(',', $_POST['$result->field_name']);

WORKS

and I have tried with [PHP? echo ''' .$result->field_name . ''' ?>] and other ways.

Incidentally, ", double quotes don't play nice on this server with PHP 5.

And I have tried combinations of " '  double quote then single quote and on the other side ' " inside the associative array brackets.. nothing works--either I get errors, implode warnings, or the arrays of these checkboxes do not get changed to comma delimited arrays if the page loads and saves without errors.

I'd appreciate receiving what must be an elegantly simple solution!

There's this really old website called http://ipolygraph.com/google/

Basically it mimics the Google homepage (as you can see it's been a while since they've updated) but the idea is really simple but clever. If you go to the search box and type cars (or whatever) and click search, it searches Google for "cars". However if you type something like   /php manual/  you'll notice it changes what you're searching to "What is...etc etc". The idea is say you tell your friend you're on Google and you ask them to think of a card, if you type    /4c/ is bob thinking of?   it'll look as if you're typing "What is Bob thinking of?", when you hit search it'll be the 4 of clubs.

Is there any way to make something similar to this? The idea came to me after I learned about the file_get_contents command in PHP.

I know that magic __get and __set are invoked automatically when an object is instantiated, but what about stuff like getName() and setName()

Code: [Select]
class NameClass {
private $_name;
public function getName() {
return $this->_name;
    }
public function setName($value) {
$this->_name = $value;
    }
}

$someName = new NameClass();
$someName->setName('Bob');
echo $someName->getName();
1. Could the setName() and getName() just as easily be named something generic like:

hotName()
coldName()

Code: [Select]
class NameClass {
private $_name;
public function hotName() {
return $this->_name;
    }
public function coldName($value) {
$this->_name = $value;
    }
}

$someName = new NameClass();
$someName->coldName('Bob');
echo $someName->hotName();
2. Also, the setName() and getName() methods must be called manually, right? Unless they are manually called, they just sit there, do nothing, am I correct?

Thanks

I stumbled upon this book where i first  met __set(). When I research it, I met __get(). So there, I don't know who they are. And what they exactly do. If I  may ask, is there any tutorial which can give me proper introduction with __set() and __get()? I have read for beginners, but I dont know, maybe I'm too dummy to understand.  please bare with me i am just  beginner. Thanks in advance.

So basically I have a function that grabs a daily bible scripture via an rss feed. For whatever reason, it is offline today and I was greeted with a huge paragraph of errors and the bottom part of my page not rendering.

Here is the function:
Code: [Select]
<?php
function scripture(){
function fetchXML($url) 
{  
$ch = curl_init(); 
$useragent="Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1"; 
curl_setopt ($ch, CURLOPT_URL, $url); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_USERAGENT, $useragent); 
//get data 
$data = curl_exec($ch); 
curl_close($ch); 
return $data; 
} 
define("USE_CURL", true); 
$url = "http://www.mybiblescripture.com/rss/bible.php?fmt=daily&trans=KJV";
//get xml doc with info 
$data = fetchXML($url);  
//create a SimpleXML object to parse the xml 
$char_xml = new SimpleXmlElement($data); 
$scripture_a=$char_xml->channel->item->description;
$scripture_b=$char_xml->channel->item->title;
echo $scripture_a . '<br><b>'. $scripture_b. '</b>';
}
?>
And here is the nasty error I receive due to the url being offline:

Code: [Select]
Fatal error: Uncaught exception 'Exception' with message 'String could not be parsed as XML' in /path/lbcfunc.php:21 Stack trace: #0 /path/lbcfunc.php(21): SimpleXMLElement->__construct('') #1 /path/index.php(31): scripture() #2 {main} thrown in /path/lbcfunc.php on line 21

I have 0 experience in catching exceptions and unsure where to start. I would like to try and just echo: "No Bible Scripture Found" as a friendly message instead I guess.

thanks.

Hey Guys. I am across this in a book and I am having a hard time understanding how I can try/catch this expception   The code below will throw an exception if I add an unit object into Archer or LaserCannon object.   Here is a quick example

class UnitException extends  Exception{}

abstract class Unit{



    function AddUnit(Unit $unit){
        throw new UnitException(get_class($this)."is a leaf");
    }
    function removeUnit(Unit $unit){
        throw new UnitException(get_class($this)."is a leaf");

    }

    

    abstract function bombardStrength();


}

class Archer extends  Unit {
    function bombardStrength(){
        return 4;
    }
}




class LaserCannonUnit extends  Unit {
    function bombardStrength(){
        return 44;
    }
}

$laser_cannon = new LaserCannonUnit();
$laser_cannon->AddUnit(New Archer()); // This is not allowed

When I run the client code I get the following error message   Fatal error: Uncaught exception 'UnitException' with message 'LaserCannonUnitis a leaf'   Can any please help me understand this?? Thanks!

Hey, I'm wondering what the issue is, I'm new to using PDO and objects so I'm sure this is a common error but setting me on the right track would be greatly appreciated.

Code: [Select]
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND password = d41d8cd98f00b204e9800998ecf8427e' at line 1' in /Users/JPFoster/Sites/Jaipai.Blog/engine.php:47 Stack trace: #0 /Users/JPFoster/Sites/Jaipai.Blog/engine.php(47): PDO->query('SELECT * FROM u...') #1 /Users/JPFoster/Sites/Jaipai.Blog/index.php(7): SiteEngine->login('', '') #2 {main} thrown in /Users/JPFoster/Sites/Jaipai.Blog/engine.php on line 47 Code: [Select]
public function login($user, $pw){
$user = addslashes($this->user);
$pw = md5($pw);

$query = "SELECT * FROM users WHERE username = ".$user." AND password = ".$pw;

//set up query
$results = $this->pdo->query($query);
$num_rows = $results->num_rows;

if ($num_rows == 1){
$row = $results->fetch_assoc();
echo "Worked!";
//$this->set_session($row['id'], $row['username'], $row['email']);
} else {

echo "Your Username and Password did not match";

}

//if user + passs match { redirect (member page) and set up sessions

// Else ... Retry...
}


}
I don't see an issue with my query, and the object is instantiated by having the submit button isset() and i use login($_post[user], $_post[pw])

How to get cURL timedout Exception or cURL timedout Message ?