Failed to insert a row [closed]

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What is wrong with following code? Without smiley function it works and with $tz = smiley($this->text); doesn't.

I tried to put to display the errors but .. mhmm doesn't works.. 0 errors

ini_set('display_errors',1); 
error_reporting(E_ALL);


<?php
class ChatLine extends ChatBase
{
    protected $text = '', $author = '', $gravatar = '';
    public function save()
    {
        $tz = smiley($this->text);

        DB::query("
            INSERT INTO webchat_lines (author, gravatar, text)
            VALUES (
                '".DB::esc($this->author)."',
                '".DB::esc($this->gravatar)."',
                '".$tz."'
        )");

   开发者_如何学JAVA     // Returns the MySQLi object of the DB class
        return DB::getMySQLiObject();
    }

    public function smiley($text)
    {
        $privatesmilies = array(
          ":)" => "smile1.gif",
          ";)" => "wink.gif"
        );

        reset($privatesmilies);
        while (list($code, $url) = each($privatesmilies))
            $text = str_replace($code, "<img src=http://127.0.0.1/chat/img/$url align=absmiddle/>", $text);

        return $text;
    }
}
?>

---

You've enabled error reporting by placing the appropriate function calls... outside a PHP code block! Instead of this:

ini_set('display_errors',1); 
error_reporting(E_ALL);

<?php
// ...
?>

... do this:

<?php
ini_set('display_errors',1); 
error_reporting(E_ALL);

// ... 
?>

Then PHP will tell you that there isn't a function called smiley(). There is, however, a class method: $this->smiley().