PHP - Unsupported Operand Types Error. Help.

Is it possible to define a variable's type at the start of your code?

I believe you can "cast" a variable, but can I do something like this...

Code: [Select]
name     string;
age        integer;
gender   string;
children  array;
single:    boolean;

I know some people say PHP is better suited for the web because it is loosely-typed, but I'm anal-retentive and like my structure!!   



TomTees

This topic has been moved to Application Design.

http://www.phpfreaks.com/forums/index.php?topic=353735.0

I have a scenario where users are downloading files from a legacy system and uploading the files into a new system that I am supporting.  Many of the files do not have an extension (most are tiffs).   The issue we have is that the new system doesn't know how to open these files (we have them open in a preview window in the new system).  I have tried numerous solutions, including finfo_file() and the depreciated mime_content_type() funcitons), but all they seem to return is "application/octet-stream".   Thanks.

can someone explain to me why PHP returns so many different variants when throwing out visitor info using this piece of code?

$ip = gethostbyaddr($_SERVER['REMOTE_ADDR']);

here are some examples I have seen recently:

planetlab24.gino-research.net.in.tum.de
10.32.64.124
49.129.197.35.bc.googleusercontent.com
abts-north-dynamic-142.110.68.182.airtelbroadband.in
173-20-152-84.client.mchsi.com

now, obviously i can understand the google one, and a few others. but, given the info and insight on these pages: https://www.php.net/manual/en/function.gethostbyaddr.php , and https://www.php.net/reserved.variables.server , why are the returns so different for different people? why does PHP see all different kinds of things? is the cause the way the user’s server is configured? some identifying info OF the server? and what about reserved IPs? like the “10.xx…” one I listed above? I’ve seen hundreds from that pool, and other blocks of reserved ones, and they have never had alpha-chars included in their captures. it’s always only the IP numbers. there a reason for that? really, all I’m looking for is why I see what I see. anyone help? furthermore, does anyone know if other server-side languages like c#, python, ruby or any js frameworks return different results than PHP ever would? thanks.

Hi all,

I'm new to PHP and just looking for any advice anyone might have on the following problem I'm having.

I have created a database and tables for registering and logging in users. Each record has three different User Types (or roles): 1, 2 and 3. Once the session has started, I would like to make certain menu items available to certain User Types. I suppose it is some sort of if...elseif statement such as:

<?php if($UserType==1) echo {"<p>Menu1</p>"}
elseif($UserType==2) echo {"<p>Menu2</p>"}
elseif($UserType==3) echo {"<p>Menu3</p>"}; ?>

Would anybody be able to point me in the right direction? I'd really appreciate any help at all.

I've asked this question before but still haven't really figured out how best to implement it, and have found myself hitting another roadblock.

I have multiple types of charts (i.e. bar, pie, etc), and various endpoints to access them.  I like to keep my routing script uncluttered, and feel the following does so.

$app->get('/chart', function (Request $request, Response $response) {
    //List of chart with optional filtering
    $this->chartService->index($request->getQueryParams());
    return $this->chartResponder->index($response, $index);
});

$app->post('/chart', function (Request $request, Response $response) {
    //Create a new chart of type (i.e. bar, pie, etc) specified by type parameter
    $chart=$this->chartService->create($request->getParsedBody());
    return $this->chartResponder->create($response, $chart);
});

$app->get('/chart/{id:[0-9]+}', function (Request $request, Response $response, $args) {
    //View chart of given ID
    $chart=$this->chartService->detail((int)$args['id']);
    return $this->chartResponder->delete($response, $chart);
});

$app->delete('/chart/{id:[0-9]+}', function (Request $request, Response $response, $args) {
    //Delete chart of given ID
    $this->chartService->delete((int)$args['id']);
    return $this->chartResponder->delete($response, null);
});

$app->post('/chart/{id:[0-9]+}/series', function (Request $request, Response $response, $args) {
    //Add a new series to the collection for chart with given ID
    $chart=$this->chartService->addSeries((int)$args['id'], $request->getParsedBody());
    return $this->chartResponder->update($response, $chart);
});

$app->put('/chart/{id:[0-9]+}/series/{seriesPosition:[0-9]+}', function (Request $request, Response $response, $args) {
    //Modify series of given position in the collection for chart with given ID
    $chart=$this->chartService->updateSeries((int)$args['id'], (int)$args['seriesPosition'], $request->getParsedBody());
    return $this->chartResponder->update($response, $chart);
});

//More endpoints for chart of given ID...

I then created the following service to support the endpoints.  Off topic, but is this a service or a controller?

My index() method is chart type agnostic.  My create() method needs a means to determine what type of chart to create, and does so using the received chart "type" passed in the body to get the applicable repository.  All the other methods receive the chart ID in the URL path and use it to first get the chart entity and then get the applicable repository based on the object.  All seems good!

<?php
namespace NotionCommotion\ChartBuilder\Service;
use NotionCommotion\ChartBuilder\Entity\Chart;

class ChartService
{
    protected $em;
    
    public function __construct(\Doctrine\ORM\EntityManager $em)
    {
        $this->em = $em;
    }

    public function index(array $params=[]):array {
        return $this->em->getRepository(Chart::class)->index($params);
    }

    public function create(array $params):Chart {
        //Get the specific repo based on $params['type].  Not perfect, but good enough
        $discriminatorMap=$this->em->getClassMetadata(Chart::class)->discriminatorMap;
        $repo = $this->em->getRepository($discriminatorMap[$params['type']]);
        //Validate data
        $chart=$repo->create($params);
        $this->em->persist($chart);
        $this->em->flush();
        return $chart;
    }

    public function read(int $id):Chart {
        return $this->em->getRepository(Chart::class)->find($id);
    }

    public function delete(int $id):void {
        $this->em->remove($this->read($id));
        $this->em->flush();
    }

    public function addSeries(int $idPublic, array $id):Chart {
        $chart=$this->read($id);
        //Validate data
        $repo=$this->em->getRepository(get_class($chart));
        $repo->addSeries($chart, $params);
        $this->em->persist($chart);
        $this->em->flush();
        return $chart;
    }

    public function updateSeries(int $id, int $position, array $params):Chart {
        $chart=$this->read($id);
        $series=$chart->getSeries();
        $seriesNode=$series->offsetGet($position);
        //Validate data
        $repo=$this->em->getRepository(get_class($seriesNode));
        $repo->update($seriesNode, $params);
        $this->em->persist($chart);
        $this->em->flush();
        return $chart;
    }
}

Until...  I find myself needing to put non-database related functionality in the repository and violating the single responsibility principle.  I am not a complete purist and might be willing to do so, however, there does not appear to be a clean way to inject dependencies in a Doctrine repository.

One thought I had was to create specialized services maybe as follows:

$c['chartService'] = function ($c) {
    return new ChartService(
        $c[EntityManager::class],
        [
            'bar'=>function ($c) {return new BarChartService($c[EntityManager::class]);},
            'pie'=>function ($c) {return new PieChartService($c[EntityManager::class], $c['someOtherObject']);},
            //add more types...
        ]
    );
};

 

class ChartService
{
    protected $em, $subServices=[];
    
    public function __construct(\Doctrine\ORM\EntityManager $em, $subServices)
    {
        $this->em = $em;
        $this->subServices = $subServices;
    }

    public function index(array $params=[]):array {/* no change */}

    public function create(array $params):Chart {/* maybe no change */}

    public function __call($name, $args) {
        $chart=$this->em->getRepository(Chart::class)->find($args[0]);
        $subservice=$this->getSubservice($chart);
        $args[0]=$chart;
        return $subservice->$name(...$args);
    }
}

abstract class AbstractSpecificChartService
{
    protected $em;
    
    public function __construct(\Doctrine\ORM\EntityManager $em)
    {
        $this->em = $em;
    }

    public function __call($name, $args) {
        throw new \Exception("Method $name not supported");
    }

    protected function getSubservice(Chart $chart):self {
        //Haven't figured out but can do so if needed.
    }

    public function delete(Chart $chart):void {
        //Include methods common to all charts here
        $this->em->remove($chart);
        $this->em->flush();
    }

    protected function helperMethods($foo) {
        //If necessary.
    }
}

class BarChartService extends AbstractSpecificChartService
{
    //Override __construct if necessary

    public function updateSeries(Chart $chart, int $position, array $params):Chart {
        //Note that Chart and not $id is passed.
        //implement code as needed
        return $chart;
    }
}

While this will provide some flexibility, I've been stung more than once using inheritance when injection should be used, and am worried it will lead to no good.  But what would I inject?  I previously suggested injecting a BarChart into a Chart and received a response that doing so is nonsensible.

So, after this long story, how should I implement this?  Thank you

friends my url is like this

Category=Love&ID=1

now in url if i do something like this

Category4637=Hate19203&ID=1

the details are still showing, how can i fix this? if someone type Capegory instead of Category and a wrong category name which do not exist with that id in db send them to index.php?

I'm working on a two-file upload form and want to be able to check the mime types of two filenames in a string variable. The code below was working when the variable @resume_path contained just one filename. How can I modify this to accommodate two files?   when I echo $resume_path, I get, for example:  cover_letter_centerline.doc, cover_letter_ctg.doc   Thanks!   

    //DO NOT TRUST $_FILES['upfile']['mime'] VALUE !!
    //Check MIME Type by yourself.
     $finfo = new finfo(FILEINFO_MIME_TYPE);
     if (false === $ext = array_search(
         $finfo->file($_FILES['resume_path']['tmp_name']),
         array(
            'txt' => 'text/plain',
            'doc' => 'application/msword',
            'pdf' => 'application/pdf',
         ),
         true
     )) {
         throw new RuntimeException('Invalid file format.');
     }
     echo "Sorry, invalid file format.  Please try again.";
     echo $ext;

Hello PHP mates!

I am having some doubts and I am going to share them with you so maybe someone can help. Okay, I know how to make signup and login page. And here is the problem. How to make signup page for multiple types of users? For example, type A user has its own signup form, user type B also has its own and same goes for C type of user. How can I make that?

Thanks in advance PHP freaks!

Hey Guys,

How are custom Mime Types achieved?  Had a quick search through the forums, and most of the posts relate to mail() questions.

Did a google search and found a completely useless article that told me to edit a non-existent text box.
Quick example, the file type I want is .WAgame, I got this far before I realised what I was doing didn't make sense.  So I looked up mime types, knowing that this file would not exist.

if ($_FILES["file"]["type"] != "file/WAgame")
      {
       naughty!
      }


Help!
Edit:

I am in the process of creating a script where only certains video types can be uploaded but at the moment am stuck. Here is my code -

<?php

$title = isset($_POST['title']) ? $_POST['title'] : null;
$desc = nl2br(isset($_POST['description'])) ? $_POST['description'] : null;
$name = isset($_POST['fullname']) ? $_POST['fullname'] : null;
$email = isset($_POST['email']) ? $_POST['email'] : null;
$country = isset($_POST['country']) ? $_POST['country'] : null;

$video = isset($_FILES['video']);
$videoname = isset($_FILES['video']['name']);
$videotmp = isset($_FILES['video']['tmp_name']);
$videosize = isset($_FILES['video']['size']);
$videotype = isset($_FILES['video']['type']);
$videoacceptable = array(
        "video/mp4",
        "video/ogg",
        "video/quicktime",
);

$videopath = "/videos/";
$videofile = $videopath . $video;

if(isset($_POST['submit'])) {

//ERROR MESSAGES / VALIDATION

if(empty($title)) {
    $errors[] = "A title is required"; 
    echo "<style type=\"text/css\"> #title { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
} elseif(strlen($title) > 80) {
    $errors[] = "Your title can only be 80 characters long"; 
    echo "<style type=\"text/css\"> #title { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
}
if(empty($desc)) {
    $errors[] = "A description is required";
    echo "<style type=\"text/css\"> #description { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
}
if(empty($name)) {
    $errors[] = "Please enter your full name";
    echo "<style type=\"text/css\"> #fullname { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
} elseif(strlen($name) > 32) {
    $errors[] = "Your name can only be 32 characters long";
    echo "<style type=\"text/css\"> #fullname { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
}
if(empty($email)) {
    $errors[] = "Please enter your email address";
    echo "<style type=\"text/css\"> #email { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
} elseif(strlen($email) > 50) {
    $errors[] = "Your email addess can only be 50 characters long";
    echo "<style type=\"text/css\"> #email { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
} elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    $errors[] = "Please enter a valid email address";
    echo "<style type=\"text/css\"> #email { background-color:#F5A9A9;border:1px solid #DF0101; } </style>";
}
if($videosize = 0) {
    $errors[] = "You forgot to upload a video";
} elseif($videosize >= 20000000) {
    $errors[] = "Your video size is too large, 20mb max";
} elseif(!in_array($videotype, $videoacceptable)) {
    $errors[] = "The file type is not allowed, only allowed .mp4, .ogg and .mov";
}

if(count($errors) === 0) {
    $connect = mysqli_connect("localhost","username","password");
        if(!$connect) {
            header("Location:"); // ADD ERROR LINK
        }
    $dbselect = mysqli_select_db("database");
        if(!$dbselect) {
            header("Location:"); // ADD ERROR LINK
        }

    $query = mysqli_query("INSERT INTO cover_videos(title, desc, name, email, country, videotmp, videotype, videosize, videopath) VALUES('$title','$desc','$name','$email','$country','$videotmp','$videotype','$videosize','$videopath')");
    move_uploaded_file($videotmp, $videofile);

    //SEND AN EMAIL TO THE USER     
    $to = $email;
    $subject = "Thank's for your upload";

    $message = '
        <html>
            <head><title>We have received your video</title></head>
            <body>
                <h3>Good News!</h3>
                <p>We have recieved your video and is awaiting approval.</p>
            </body>
        </html>
    ';

    $headers = 'FROM: no-replyk' . "\r\n";
    $headers = 'MIME-Version: 1.0' . "\r\n";
    $headers = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
    $headers = 'X-Mailer: PHP/' . phpversion();

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

    header("Location:"); //SUCCESSFUL UPLOAD PAGE

    }

}

?>

So whats happening is when i go to upload a file, im uploading a .mov file but the error message that pops up is "The file type is not allowed, only allowed .mp4, .ogg and .mov" but the .mov mime is in the videoacceptable array so im a bit stuck at the moment, any know whats the problem?

I searched the forums and the Internet as a whole looking for more information on this, but all I've turned up is a lot of information on /how/ to use create_function(), not /when/ to use it. For instance: http://en.wikipedia.org/wiki/Lambda_calculus

Let me reiterate that I understand how it works in general. However, in several years of PHP programming, even through the development of fairly complex, robust systems, I can only think of one case where I recall creating a dynamic function and even here I feel like it was a design mistake.

Of course, I use anonymous functions all the time in JavaScript for callback code.

It seems to be used from time-to-time to iterate over and apply transformations to sets, but I don't understand the advantage over foreach() for such a task. So, if someone is so-inclined, would you mind listing a general scenario or two where create_function() is the correct and appropriate solution to the problem?

Hi guys,

I want to generate reports and i want to use some fields of one table and other fields of another table. How can i use that?

Ex.   customer(customer_id, full_name,name_with_initials, address, contact_number,gender)

       transaction_table(tran_ID, account_number,account_type,transaction_type, amount, Date)


If i want to use only customer_id, tran_ID, full_name and amount how can i use them to generate reports.

I want them to be taken as fields of one table and use it..

Thanks,
Heshan

Hi Guys   I'm just getting back into coding after taking a break from it.  I want to have a text field that can take up to 1000 characters. What is the best field type for the MySQL field for this?  I can't remember if there are any particular special types.   Thanks

Hey all,

I am building a simple cms. I have a posts table and I have an images table. A post has many images and images has a foreign key to the posts table. So when a user edits, updates, creates, and deletes a post, they affect the images related to the post. Sometimes a post can have more than one image, like three images. Hence I rendered this in the view (note that I am using a datamapper that converts tables to objects and fields to key/value pairs):

Code: [Select]
foreach($records as $post){
echo form_open_multipart("homes/update/$post->id"); //File uploads require a multipart form. Default form handling uses the application/x-www-form-urlencoded content type. Multipart forms use the multipart/form-data encoding. //this is critical to pass the id as part of the action attribute of the form, so we can use our params hash to target the id to update the specific record
 
  echo label('Update Title');
echo form_input('title',$post->title);
echo label('Update Body');
echo form_textarea('body',$post->body);

  $images = $post->images->include_join_fields()->get();
if(!is_null($images->image_file_name)){ 
  echo label('Update Images');
foreach($images as $image){
echo form_upload('image_file_name',$image->image_file_name); 
}
}

}
echo form_submit('submit','Update');
The above line of code will render a few input file types. The problem occurs during posting to my update method. It is looking for one parameter from the input file field and so if I upload three different images, it will only look for one and write only one to database:

Code: [Select]
$field_name = 'image_file_name';
  if ( ! $this->upload->do_upload($field_name)){
  $error = array('error' => $this->upload->display_errors());
echo $error['error'];
// redirect('homes/edit');
  }
else {
  $data = array('upload_data' => $this->upload->data());
$image_file_name = $data['upload_data']['file_name'];

Is it possible to do wht I am trying to do? Should I only have on input file type per form submission or is that I need to fix the code to accomodate for multiple submissions by creating an array of sorts?

Thanks for response.