PHP - Help With Understanding The Magic Functions __get() And __set()

what are magic methods? when do we need to use magic methods? what are the advantages of using magic methods? thanks in advanced.

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 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

Hi ! I was seeing the Exception class defined in basic.php and I found that all the methods are final and without body:
Code: [Select]
final public function getMessage () {}But if I call MyCustomException->getMessage() I get the message.
How does it works??

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

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.

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.

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!

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 have a script I am putting together that simulate a cricket game. The only issue is, that there are a huge number of functions because there doesn't seem to be any other way to do this properly. As well as this, there a while() loop and all this seems to be leading to the page reaching a max 30 second timeout when generating the result.

My code is attached below, it is quite messy at the moment because i've just be working on it, but I was wondering if anyone has any solutions of how I can speed this up or change to prevent a timeout:

<?php
// Error reporting
error_reporting(E_ALL);

// Connect DB
mysql_connect("wickettowicket.adminfuel.com", "rockinaway", "preetha6488") or die(mysql_error());

// Select DB
mysql_select_db("wickettowicket") or die(mysql_error());

// MySQL queries to find batsmen and bowlers 
$array_batsmen = mysql_query('SELECT id, name, ability, strength FROM wtw_players WHERE team_id = 1 ORDER BY id ASC');
$array_bowlers = mysql_query('SELECT id, name, ability, strength FROM wtw_players WHERE team_id = 2');

// Start table for data 
$data = '<table width="600px">';

// Create blank scorecard
while ($array_bat = mysql_fetch_array($array_batsmen))
{
$data .= '<tr><td>'.$array_bat['name'].'</td><td></td><td></td><td>0</td></tr>';
}

// Set up arrays for players 
$current_batsman = $current_bowler = array();

// Reset query
mysql_data_seek($array_batsmen,0);

$in_one = $in_two = $it = '';

function currentBatsman($id, $name, $ability, $strength, $out, $in, $runs)
{
global $current_batsman;


$current_batsman = array (
'id' => $id,
'name' => $name,
'ability' => $ability,
'strength' => $strength,
'out' => $out,
'in' => $in,
'runs' => $runs
);

echo 'set current';
}

// Set up arrays of batsmen
while ($array = mysql_fetch_array($array_batsmen))
{

if ($it < 3 && $in_one == '') 
{
currentBatsman($array['id'], $array['name'], $array['ability'], $array['strength'], 0, 1, 0);

$batsmen[$array['id']] = array (
'id' => $array['id'],
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength'],
'out' => 0,
'in' => 1,
'runs' => 0
);

$in_one = $array['id'];
$current = $array['id'];
$it++;
}
else if ($it < 3 && $in_two == '') 
{
$batsmen[$array['id']] = array (
'id' => $array['id'],
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength'],
'out' => 0,
'in' => 1,
'runs' => 0
);

$in_two = $array['id'];
$it++;
}
else 
{
$batsmen[$array['id']] = array (
'id' => $array['id'],
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength'],
'out' => 0,
'in' => 0,
'runs' => 0
);
}

}

// Bowler Array
while ($array = mysql_fetch_array($array_bowlers))
{
$bowlers[] = array (
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength']
);

}

// Reset both queries
mysql_data_seek($array_bowlers,0);
mysql_data_seek($array_batsmen,0);



function changeBatsman($just_out)
{
global $array_batsmen, $batsmen; 

//Update array
$batsmen[$just_out] = array (
'in' => 1,
'out' =>  1
);

while ($array = mysql_fetch_array($array_batsmen))
{
if ($just_out != $array['id'] && $batsmen[$array['id']]['out'] != 0) currentBatsman($array['id'], $array['name'], $array['ability'], $array['strength'], 0, 1, 0);
}

// Reset query
mysql_data_seek($array_batsmen,0);

echo 'change batsman';
}

function swapBatsman($other_batsman)
{
global $array_batsmen, $batsman; 

while ($array = mysql_fetch_array($array_batsmen))
{
if ($other_batsman != $array['id'] && $batsman[$array['id']]['out'] != 0 && $batsman[$array['id']]['in'] == 1) currentBatsman($array['id'], $array['name'], $array['ability'], $array['strength'], 0, 1, 0);
}

// Reset query
mysql_data_seek($array_batsmen,0);

echo 'swap batsman';
}

$runs = $outs = $balls = $overs = 0;

$played = array();

function selectBowler()
{
global $bowlers, $current_bowler;

// Select random bowler
$choose_bowler = array_rand($bowlers, 1);

$current_bowler = array (
'name' => $bowlers[$choose_bowler]['name'],
'ability' => $bowlers[$choose_bowler]['ability'],
'strength' => $bowlers[$choose_bowler]['strength']
);

 

}

/*
function selectBatsman();
{
global $array_batsmen;

while ($array_batsmen[]['out'] != 1)
{


}*/

function bowl()
{
global $batsmen, $bowlers, $current_bowler, $current_batsman, $data, $balls, $outs, $runs;

if ($current_batsman['out'] == 0)
{
echo 'bowling';
// Set the initial number
$number = rand(0, 190);

// Ability of batsman
if ($current_batsman['ability'] > 90) $number += 30;
else if ($current_batsman['ability'] > 70) $number += 15;
else if ($current_batsman['ability'] > 50) $number += 2;
else $number = $number;

// Strength of batsman
if ($current_batsman['strength'] > 90) $number += 15;
else if ($current_batsman['strength'] > 70) $number += 10;
else if ($current_batsman['strength'] > 50) $number += 5;
else $number = $number;

// Depending on overs
if ($balls > 270) $number += 30;
else if ($balls > 120) $number -= 10;

// Ability
if ($current_bowler['ability'] > 90) $number -= 30;
else if ($current_bowler['ability'] > 70) $number -= 15;
else if ($current_bowler['ability'] > 50) $number -= 2;
else $number = $number;

// If batsman has made a huge total of runs, we need to knock some numbers off - more likely to get out
if ($current_batsman['runs'] > 200) $number -= 70;
else if ($current_batsman['runs'] > 100) $number -= 30;

// Finally sort out runs
if ($number > 190) $run = 6;
else if ($number > 170) $run = 4;
else if ($number > 160) $run = 3;
else if ($number > 100) $run = 2;
else if ($number > 50) $run = 1;
else if ($number > 10) $run = 0;
else if ($balls > 120 && $number > 0) $run = 0;
else $run = -1;

// Increase number of balls
$balls += 1;

// Are they out?
if ($run == -1)
{
$current_batsman['out'] = 1;

$played[] = $current_batsman['id'];
$find = '<tr><td>'.$current_batsman['name'].'</td><td></td><td></td><td>0</td></tr>';
$replace = '<tr><td>'.$current_batsman['name'].'</td><td></td><td>'.$current_bowler['name'].'</td><td>'.$current_batsman['runs'].'</td></tr>';

$data = str_replace($find, $replace, $data);


changeBatsman($current_batsman['id']); 



echo 'out';

}
else
{
$current_batsman['runs'] += $run;
$runs += $run;

if ($run == 1 || $run == 3)
{
swapBatsman($current_batsman['id']);
echo 'time to swap';
}

echo $run;


}

// Count outs
if ($current_batsman['out'] == 1)
$outs += 1;


}
}

function game()
{
global $main, $batsmen, $bowlers, $data, $batted, $balls, $outs, $current_batsman;

// Check if possible
while ($balls <= 295 && $outs < 10)
{

selectBowler();

// Actually bowl now

bowl();


}


}


game();



echo $data;

I teaching myself php, but I am coming from java and other compiled languages, so the process has been a little bumpy. I am trying to do something like this:

Code: [Select]
class my_class
{

  function one ()
  {
     $two = two ();

     $three = three ();

     $five = $two + $three;

     return $five;
  }

  function two ()
  {
     $two = 2;

    return $two;
  }
 
  function three ()
  {
     $three = 3;

     return $three;
  }
}


Unfortunately, I keep getting an error message saying that my call to two () is an undefined function. I am gathering from this that the scope of one () is not aware of the existence of two (). Is there a way to get around this so I can call two () and three () from one ()?

Hi, can someone help me figure out why the logo div isn't centering? 

Code: [Select]
<?php
require_once("functions.php"); 
?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<style type="text/css">
td {
border-top-style: solid;
border-right-style: solid;
border-bottom-style: solid;
border-left-style: solid;
border-top-color: #30C;
border-right-color: #30C;
border-bottom-color: #30C;
border-left-color: #30C;
}
</style>
<link href="doggyTreats.css" rel="stylesheet" type="text/css" />
</head>

<body>

<?php
[color=yellow]logo();[/color]
navBar();
echo "<div id=\"mainContent\">";
echo "<form action=\"\" method=\"post\" name=\"catalog\">";
  
DatabaseConnection();  

  $query = "SELECT * FROM treats"; 
        $result_set = mysql_query($query) or die(mysql_error());
$i = 0;

        echo "<table>";
        while ($row = mysql_fetch_array($result_set))
        {
echo"<tr><td width=\"2s00px\"><img src=\"{$row['product_pic']}\" /></td><td width=\"200px\">{$row['product_title']}.<br /><br />{$row['product_Description']}.<br /> Price:  \${$row['price']}.<br /><br />Quantity <input name=\"quantity\" type=\"text\" size=\"2\" /></td></tr>";
        }
echo "<tr>"; 
echo "<td><input name=\"submit\" type=\"button\" value=\"Proceed to Checkout\" />"; 
echo "</table>";    
echo "</form>";
echo "</div>";
footer();
?>
</body>
</html>

Code: [Select]
#navBar {
background-color: #060;
width: 200px;
padding-top: 50px;
padding-bottom: 250px;
float: left;
}
#navBar #menu {
margin-right: 6px;
}

.menuOption {
background-image: url(assets/bone2a.gif);
background-repeat: no-repeat;
padding-bottom: 25px;
list-style-type: none;
height: 20px;
padding-top: 26px;
text-align: center;
}
body {
background-color: #0089cc;
}[color=yellow]
#logo  {
text-align: center;
margin-top: 5px;
height: 123px;
width: 182px;
}[/color]
#footer {
font-style: italic;
text-align: center;
}
.shoppingCart tr th {
padding: 5px;
}
.shoppingCart tr td {
padding: 5px;
}
#mainContent {
width: 350px;
margin-top: 30px;
}


Code: [Select]
<?php
[color=yellow]function logo()
{
echo "<div id=\"logo\">";
echo "<img src=\"assets/logo.gif\" alt=\"logo\" />"; 
echo "</div>";
}[/color]
function footer()
{
echo "<div id = \"footer\">";
echo "Auntie Vic\'s Treatery <br />";
echo "PO Box 34092 <br />";
echo "Clermont, IN 46234 <br />";
echo "317-701-0343 <br />";
echo "<a href=\"mailto:auntievics@gmail.com\">Email Us</a>";
echo "</div>";
}  
function navBar()
{

    echo "<div id = \"navBar\">";
echo "<ul id=\"menu\">";
echo "<li class=\"menuOption\"><a href=\"index.html\">Home</a></li>";
echo "<li class=\"menuOption\"><a href=\"aboutUs.html\">Management Team </a></li>";
  echo "<li class=\"menuOption\"><a href=\"treats.html\">Treats </a></li>";
echo "<li class=\"menuOption\"><a href=\"charities.html\">Supported Charities</a></li>";
echo "<li class=\"menuOption\"><a href=\"order.html\">Orders</a></li>";
echo "</ul>";
echo "</div>";
}
?>

I have a system that I want to change.