PHP - Alternatives To Entity Inheritance

I have:
{$content['size']} inside Code: [Select]
echo "";
I had to switch the quotes around because I added something else that required me to do so, so it now sits at this:
{$content["size"]} inside Code: [Select]
echo '';
Before I made the quote switch, it was echoing "Large", which is correct. Now after the switch, it echo's "{$content["id"]} ". Why?!
I've tried 567568758654 different combinations of quotes and removing {} and stuff but non of them fix it. I don't even see why its suddenly not even echoing! All I did was quote reverse!

I'm wondering if there's any alternatives to redirecting.

For example, after the registration process, I have a fully loaded User object with all of the information I need to load the user's profile (the place that logging in/registering takes you to). I can call the profile action of the user controller and pass in the User object and it will display just fine. The problem is that since the URL is still pointing to the register action if the user refreshes their page its going to try sending the previous form again.

Alternatively I could redirect to the profile and have it load that way, but then I'm fetching data from the database seemingly unnecessarily since I had all of the data I needed already fetched prior to redirecting.

Is there anyway that I could do the first process but change the url and forget the previous form data so that if they refresh its just refreshing the profile and not resending the previous request?

Thanks in advance for any help.

I created had created a website between me and a couple friends. On the website I made an Ajax\Javascript\Php Instant Messenger. It works fine for something small. Each user has a contact list and currently I am saving each individual conversation between each user into an Sql table { senderId, RecieverId, Message } and reading it back. Now I know its no problem for something small but obviously it leaves security risks and sends too many requests to the server. Any of you guys have any alternative Idea's for this messenger? I don't necessary need to save the conversations, I'm simply using that method to send and receive them. I have a buddy who does his messenger through J.S sockets but I would like to keep to php if possible. Any comments or suggestions would be much appreciated. 



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Sometimes I have various data which I wish to be available to all scripts.  Typically, they are constants which are related, and using PHP's constants makes them difficult to group.   As such, my solution has been to create a single global variable such as $GLOBALS['myGlobalVariable'], and dump them all in it.   Are there better ways to implement this?  For instance, using a singleton?  Please provide rational why one solution is better than the other.   Thank you

<?php
class mySinglton {
    private static $instance = NULL;
    private function __construct() {}
    private function __clone(){}
    public static function mySinglton($values=null)
    {
        if (!self::$instance)
        {
            self::$instance = new stdClass();
            foreach ($values as $key=>$value) {
                self::$instance->$key=$value;
            }
        }
        return self::$instance;
    }
}

class someClass
{
    public $a=1,$b=2,$c=3;
}

$globals=array(
    'foo'=>'bar',
    'daysOfWeek'=>array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'),
    'someClass'=>new someClass
);

$GLOBALS['myGlobalVariable']=$globals;

mySinglton::mySinglton($globals);

testIt();

function testIt()
{
    echo('<pre>'.print_r($GLOBALS['myGlobalVariable'],1).'</pre>');
    echo('<pre>'.print_r($GLOBALS['myGlobalVariable']['foo'],1).'</pre>');

    echo('<pre>'.print_r(mySinglton::mySinglton(),1).'</pre>');
    echo('<pre>'.print_r(mySinglton::mySinglton()->foo,1).'</pre>');
}

?>

 

If I want to load some user information from the database into an object/array and share it throughout my application, what's the best approach for this? Here is what I thought of doing:

- I can call a function (e.g user_info() ) that will return the user information whenever I need it , but It'll have to run a DB query each time I call it.

- Load user information once from the DB, assign it into a global array/object, then call that object whenever I need it.

A lot of people recommended against using global variables, but I think performance wise it's better than running a query each time.

Are there any better alternatives than the above approaches?

Hello again,

So, after messing around with gettext, and having found the solution to my previous post (https://forums.phpfreaks.com/topic/310383-gettext-for-multilangual-not-working-for-me/), I've come to the conclusion that I need to use something else than gettext in order to make my site multilingual.

 

Problem I have with gettext is that I absolutely need to have my desired languages (i.e. fr_FR, nl_NL, etc) installed on my server's system (in my case, a NAS for now). I can see which locales I have on my server with 'locale -a'. I am in no way able to install new locales on my NAS. It's too limited... too much locked down. 

So, I'm looking for an alternative to gettext. Any suggestions for me perhaps ?

Thanks for any advice. 

Pat

 

I am trying to do the following. Except I know that 'return' is not the right method to use, as it stops the script, so what ends up happening is only one row is returned, instead of the three that are there. With return, the data is being passed without being immediately printed, and I end up with the data (but not all of it, because the script stops) in correct place in the page.

If I replace return () with echo(), it works fine, in terms of returning the correct data.

However, with the way things are setup, if I use echo, the results print at the head of my page. I am using function CreateSideMenu to establish the values for content, and then another function, later on the index.php page, actually creates the page. So what I need is to have something, similar to return (), that passes the information on, but does not immediately print it.

Do I make sense?

see code below:


function CreateSideMenu ()

{ // open CreateSideMenu function

include ('/Users/max/Sites/rdbase-llc/hidden/defin/kinnect01.php');

$query = "SELECT content_element_title, content_element_short_text FROM content_main";

$result = mysql_query ($query, $dbc);

while ($row = mysql_fetch_array ($result, MYSQL_ASSOC))

{

return ("<p>" . $row[content_element_title] . "</h2>\n<p>" . $row[content_element_short_text] .  "</p>");

}


Thanks ahead of time.

Now i use a very complex normal for, how i can use a foreach?

This topic has been moved to Ajax Help.

http://www.phpfreaks.com/forums/index.php?topic=326703.0

I was looking over some code that someone else had written when I noticed a line with "$this->entity" in it.  "Entity" is recognized as PHP syntax in my text editor but I cannot find any reference to it in any documentation that I've looked through.

Where can I find more information about the "entity" class?

Thanks in advanced!

I have

class MyProductClass
{
    function computeProductA()
    {
        doSometing();
    }

    function computeProductB()
    {
        doSometingElse();
        $this->computeProductCommon();
    }

    function computeProductC()
    {
        $this->computeProductCommon();
    }

    function computeProductCommon()
    {
    }
}

And I was wondering ... does it make sense to move out product-specific functions into their own classes and then have them extend MyProductClass. While I think it makes sense to me from an aesthetic point of view, and that I get to use object oriented principles, I could not answer myself as to "Why" I would do that.   So, why?  Why would I do that, and should I?   Right now in the code, various product specific classes instantiate MyProductClass and just use their specific and generic functions, as needed.
Edited by dennis-fedco, 15 December 2014 - 09:55 AM.

Context.

Class AbstractTenantEntity's purpose is to restrict access to data to the tenant (i.e. account, owner, etc) that owns the data.  Any entity which extends it will have the TenantId added when created and the TenantId in the WHERE clause for all other requests.

Tenant typically does not have collections of the various entities which extend AbstractTenantEntity, but does for a few of them do.  When using annotation, I handled it by applying Doctrine's AssociationOverride annotation to the extended classes which should have a collection in Tenant.

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity()
 */
class Tenant
{
    /**
     * @ORM\OneToMany(targetEntity=Asset::class, mappedBy="tenant")
     */
    private $assets;

    // Other properties and typical getters and setters
}

 

use Doctrine\ORM\Mapping as ORM;

abstract class AbstractTenantEntity implements TenantInterface
{
    /**
     * inversedBy performed in child where required
     * @ORM\ManyToOne(targetEntity=Tenant::class)
     * @ORM\JoinColumn(nullable=false)
     */
    protected ?Tenant $tenant = null;

    // Typical getters and setters
}

 

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity()
 * @ORM\AssociationOverrides({
 *     @ORM\AssociationOverride(name="tenant", inversedBy="assets")
 * })
 */
class Asset extends PublicIdTenantEntity
{
    // Various properties and typical getters and setters
}

 

So, now I am changing from annotations to attributes, and modified AbstractTenantEntity as follows:

use Doctrine\ORM\Mapping\ManyToOne;
use Doctrine\ORM\Mapping\JoinColumn;

abstract class AbstractTenantEntity implements TenantInterface
{
    /**
     * inversedBy performed in child where required
     */
    #[ManyToOne(targetEntity: Tenant::class)]
    #[JoinColumn(nullable: false)]
    protected ?Tenant $tenant = null;

    // Typical getters and setters
}

Next I went to modify Asset and realized that there didn't appear to be an attribute for AssociationOverride.  I found a little discussion on the topic on github but couldn't find any resolution.

Question

Can inheritance be used with PHP 8 attributes where the property is defined in the parent class and the attribute is applied in the child class?  Googling php 8 attributes inheritance didn't provide anything and thus I expect the answer is no but thought I'd ask.

Thanks

 

EDIT.  Maybe Doctrine does have an attribute version: https://github.com/doctrine/orm/blob/2.9.x/lib/Doctrine/ORM/Mapping/AttributeOverride.php

EDIT2.  Actually don't think so

Edited July 30 by NotionCommotion

Hello, I have two classes:

Code: [Select]
abstract class Serializable
{
public function serialize()
{
foreach($this as $member => $value)
{
$publicObject->$member = $value;
}
return $publicObject
}
}

class ToSerialize extends Serializable
{
public function otherSerialize()
{
foreach($this as $member => $value)
{
$publicObject->$member = $value;
}
return $publicObject
}
}

$foo = new ToSerialize();
$foo->serialize(); //This will return one thing
$foo->otherSerialize(); //This will return something different

Why does this happen? 

Hey again,

I hope you guys don't get annoyed with my noob questions.

I was reading the guide here on the site about OOP, and on the section related to inheritance it makes a "Dog" class, after giving it an attribute and a method it then creates the "Animal" class using "extends" and expands on the methods.

Then after that here is the paragraph I'm looking at now.

"Class Animal is unaware of the fact that it is being extended; there are no references to Dog whatsoever. Say Animal extended another class called LifeForm, and I instantiated Animal, only methods and properties of Animal and LifeForm would be included in the object."

To me, this sounds like if I were to create this "LifeForm" class by further extending the "Animal" class, I would not be able to access any of the attributes and methods that were in "Dog," only the ones that were in Animal and any that I put in LifeForm itself.

But, I was playing with the code and I can call an attribute from Dog in LifeForm. So, am I reading the post wrong or am I coding wrong?

Code: (php) [Select]

<?php
    //Class Dog//
    class Dog{
        public $hungry = 'Hell yeah!';
        public $test = 'Affirmative!';
        
        function eat($food){
            $this->hungry = 'not so much.';
        }
                
    }
    
    //Class Animal//
    class Animal extends Dog{
        function eat($food){
            if($food === 'cookie'){
                $this->hungry = 'not so much';
            }else{
                echo 'Barf! I only like cookies!';
            }
        }
    }
    
    //Class LifeForm//
    class LifeForm extends Animal{
        function eat($food){
            
        }
    }
      
    //Program Variables//
    $dog = new Dog;
    $LifeForm = new LifeForm;
    
    //Program Code//
    echo $LifeForm->test;
?>


My assumption was that I am able to call that attribute because of the 'public' in front of it, but all the attributes in the examples are also public.

Thanks guys!

Hi,
After a long time I start php again to do some stuff and using OOP concept for the first time and getting this below error
Code: [Select]
PHP Fatal error:  Class 'SystemConfig' not found in /home/tanveer/Workspace/EmailTest/webapp/classes/MailParser.class.php on line 12, referer: http://localhost/EmailTest/public_html/index.php
My project directory structure is as follows:

Code: [Select]
\webapp:
   |- classes
          |- MailParser.class.php
          |-DatabaseConnect.class.php
          |-SystemConfig.class.php

\public_html:
     |-header.php
     |-footer.php
     |-gencsv.php
     |-stat.php
   \css
      |-style.css
   \images
      index.php


And the php code file that I am trying to make work is as follows:
class MailParser extends SystemConfig
{

   /* Reads the files passed line-by-line
    * @param $fileName
    */
   public function readFiles($fileName){

      $fileHandler   = fopen($fileName,'r');
      
      while ($line = fgets($fileHandler)) {
         echo $line."<br />";   
      }

      fclose($fileHandler);

   }
   
   
  /* Traverse the user specified directory
   * @param $dirPath
   */
   public  function traverseDirectory($dirPath)
   {
      echo $dirPath;
      
      $sentFolderPath = new SystemConfig();
      $sentFolderPath->getSentMailFolder();
      
      $totalDirPath = $dirPath."/".$sentFolderPath;
      echo $totalDirPath;
      
      $io=0;

      if ($handle = @opendir($dirPath))
      {
         while (false !== ($file = readdir($handle)))
         {
            if ($file != "." && $file != "..")
            {
               $newdir = "";
               $filetext = "";

               if (!is_file($dirPath."/".$file) or is_dir($dirPath) )
               {
                  $io++;

                  $newdir.= $dirPath."/".$file."/";
                  print $newdir."<br />";
                  
                  $this->traverseDirectory($newdir);
                  
                  if(is_file($dirPath.$file))
                  {
                     $text =  str_replace('//','/',"".$dirPath.$file."\n");
                     
                  }
               }
            }
         }

         closedir($handle);
      }
   }

}

$rmf = new MailParser();
$rmf->traverseDirectory($_POST["dirpath"]);

?>