Cannot use object of type as array VS Array to string conversion

Question

So I'm working on this project, and I'm at the point of the pagination system. Whenever a page is called, it goes the following way:

The index page searches a page, according to the $_GET variable:

if (isset($_GET['page']))
{
    $tpl->parsePage($_GET['page']);
}
    else
{
    $tpl->parsePage('index');
}

Then the pages' name goes trough the parsePage function in my tpl class:

public function parsePage($pagename)
    {
        $pageid = $this->getPageIdByName($pagename);
        $page = $this->shorts(new Page($pageid));
        return $page;
    }

It gets the pages' ID by using a function, and then creates a new page. In the page class, the pages' content is fetched from my database:

public function __construct($pageid)
    {
        $pageid = $pageid['id'];
        $query = DB::$conn->prepare('SELECT * FROM pages WHERE id = :id LIMIT 1');
        $query->bindParam(':id', $pageid, \PDO::PARAM_INT);
        $query->execute();
        $pageInfo = $query->fetch(\PDO::FETCH_ASSOC);

        $this->pageid = $pageInfo['id'];
        $this->title = $pageInfo['title'];
        $this->authors = $pageInfo['authors'];
        $this->contents = $pageInfo['contents'];
        $this->publish_time = $pageInfo['publish_time'];
        $this->edit_time = $pageInfo['edit_time'];
        $this->edits = $pageInfo['edits'];
        $this->editor = $pageInfo['editor'];
        $this->hidden = $pageInfo['hidden'];
        $this->parent = $pageInfo['parent'];
        $this->category = $pageInfo['category'];
    }

then the $this->contents data goes through a function which replaces all parameters with their assigned values:

private function shorts($content)
{
    if(isset($_SESSION['user']))
    {
        $this->parameter = array_merge($this->parameter, $this->user);
    }
    $this->parameter = array_merge($this->parameter, $this->language, $this->system);
    return $this->output = str_replace(array_keys($this->parameter), array_values($this->parameter), $content->contents); // Line 34

}

And this is where it goes wrong.. When I use this way (with $content->contents) the output is the following:

Notice: Array to string conversion in C:\xampp2\htdocs\application\classes\class.tpl.php on line 34

First thing that popped into my mind: $content['contents'], but then the output is the following:

Fatal error: Cannot use object of type C_Red\Template\Page as array in C:\xampp2\htdocs\application\classes\class.tpl.php on line 34

My knowledge stopped here...

I've marked line 34 in the shorts function. I hope that the question is clear enough to understand, but I didn't really know how to describe it, since it's a pretty vague error.

Thanks.

Blaatpraat · Accepted Answer · 2015-01-15 13:50:50Z

1

$content is the object. $content->contents is an array.

So $content['contents'] won't work, because $content is an non-iterable object. I don't know the structure of the Page class, but according to what you're saying, maybe this will work:

$content->contents['contents']

answered Jan 15, 2015 at 13:50

Blaatpraat

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5 Comments

sushibrain Over a year ago

When I var_dump on $content->contents it returns": string(1736) "Some lorem ipsum", which would point out that $content->contents isn't an array right?

sushibrain Over a year ago

The only arrays are in the constructor and in the shorts function, which are in the main post.

Blaatpraat Over a year ago

Can you execute a var_dump on $this->output too? Before line 34.

sushibrain Over a year ago

Returns NULL. I didn't define $this->output yet

Blaatpraat Over a year ago

The last thing I can think of is that $this->parameter is a multi-dimensional array => each value in array_values delivers also an array that triggers the notice. Can you var_dump $this->parameters? If this is not the case, I also ran out of options...

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