CODEWITHSUNDEEP
phpoopvariables
rick
rick

Reputation: 41

convert array to object in php

In php I am converting posted data from a form to objects like this:

<?php

...some code...

    $post = new stdClass;

    foreach ($_POST as $key => $val)
        $post->$key = trim(strip_tags($_POST[$key]));

?>

Then in my page I just echo posted data like this :

<?php echo $post->Name; ?>
<?php echo $post->Address; ?>

etc...

This works fine but I have multiple checkboxes that are part of a group and I echo the results of that, like this:

<?php
  $colors = $_POST['color_type'];
  if(empty($colors))
  {
    echo("No color Type Selected.");
  }
  else
  {
    $N = count($colors);

     for($i=0; $i < $N; $i++)
    {
      echo($colors[$i] . ", ");
    }
  }
?>

That works when I am just using array, but how do I write this as object syntax?

Upvotes: 1

Views: 1376

Answers (3)

Paul d&#39;Aoust
Paul d&#39;Aoust

Reputation: 3209

Pretty simple -- when you attach the color_type key to your object, it'll become an array that's a property of your object. This is most likely what you want: you probably won't want to turn that array into its own stdClass-based object, because then you won't be able to iterate through all the values (as easily). Here's a snippet:

<?php
    // putting in both of these checks prevents you from throwing an E_WARNING
    // for a non-existent property. E_WARNINGs aren't dangerous, but it makes
    // your error messages cleaner when you don't have to wade through a bunch
    // of E_WARNINGS.
    if (!isset($post->color_type) || empty($post->color_type)) {
        echo 'No colour type selected.'; // apologies for the Canadian spelling!
    } else {
        // this loop does exactly the same thing as your loop, but it makes it a
        // bit more succinct -- you don't have to store the count of array values
        // in $N. Bit of syntax that speeds things up!
        foreach ($post->color_type as $thisColor) {
            echo $thisColor;
        }
    }
?>

Hope this helps! Of course, in a real-life setting, you'll want to do all sorts of data validation and cleaning -- for instance, you'll want to check that the browser actually passed an array of values for $_POST['color_type'], and you'll want to clean the output in case someone is trying to inject an exploit into your page (by going echo htmlspecialchars($thisColor); -- this turns all characters like < and > into HTML entities so they can't insert JavaScript code).

Upvotes: 0

Peter
Peter

Reputation: 16923

using your code

function array_to_object($arr) {
    $post = new stdClass;
    foreach ($arr as $key => $val) {
        if(is_array($val)) {
            $post->$key = post_object($val);
        }else{
            $post->$key = trim(strip_tags($arr[$key]));
        }
    }
    return $post;
}

$post = array_to_object($_POST);

or more complex solution

function arrayToObject($array) {
    if(!is_array($array)) {
        return $array;
    }

    $object = new stdClass();
    if (is_array($array) && count($array) > 0) {
      foreach ($array as $name=>$value) {
         $name = strtolower(trim($name));
         if (!empty($name)) {
            $object->$name = arrayToObject($value);
         }
      }
      return $object;
    }
    else {
      return FALSE;
    }
}

from http://www.richardcastera.com/blog/php-convert-array-to-object-with-stdclass

Upvotes: 3

Rene Pot
Rene Pot

Reputation: 24815

why would you want that? What's wrong with an array?

Use Object Oriented Programming, which might be what you are looking for. Treat it as an object, by making a class called Color and doing $colors[$i] = new Color();

This way you can do whatever you want with it, and add functions to it.

Upvotes: 0

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