how to use this db connector?

[peppericious]

I want to add a query to a page to retrieve blog posts from a table I've added to the db . At the top of the page in an include, the following db connector (not made by me) is already in use:

 

<?php
class Database {
	private $conn;
	function __construct() {
		$this->conn = mysql_connect("localhost", "root", "root") or die(mysql_error());
		mysql_select_db("thedatabase", $this->conn);
	}
	function query($sql) {
		$result = mysql_query($sql, $this->conn);
		if(!$result) { die(mysql_error()); }
		else {
			return $result;
		}
	}
}
?>

 

I've not used classes before, nor have I used functions of the type in the code snippet above so I'll admit I'm fumbling around. If I were using a more basic connector, the query I would run would be something like this:

 

<?php
$q = "SELECT 
	post_id,
	post_title,
	post_subtitle, 
	post_body, DATE_FORMAT(post_created, '%M %D %Y') AS created_on,
	post_ext_link
	FROM blog 
	ORDER BY post_id DESC
	LIMIT 3";
    $r = @mysqli_query($conn, $q); 
      if (mysqli_num_rows($r) > 0) {	 
		  while ($row = mysqli_fetch_array($r, MYSQLI_ASSOC)) {
		  echo
		  "<h2>" . $row['post_title'] . "</h2>" .
		  "<h3" . $row['post_subtitle'] . "</h3>" . 
		  "<p" . $row['post_body'] . "</p>" .
		  "<p" . $row['created_on'] . "</p>"
		  ;
    	}
	  } else {
	  	echo '<p>No posts to display at present.</p>';
	  }
?>

 

Could someone kindly oblige me by telling me what changes I must make to the query so that it can make use of the connector already in use on the page? Hope my question makes sense...

 

All/any help appreciated.

[Spring]

<?php
        $db = new Database();

$q = "SELECT 
	post_id,
	post_title,
	post_subtitle, 
	post_body, DATE_FORMAT(post_created, '%M %D %Y') AS created_on,
	post_ext_link
	FROM blog 
	ORDER BY post_id DESC
	LIMIT 3";
  
        $r = $db->query($q); 
      if (mysqli_num_rows($r) > 0) {	 
		  while ($row = mysqli_fetch_array($r, MYSQLI_ASSOC)) {
		  echo
		  "<h2>" . $row['post_title'] . "</h2>" .
		  "<h3" . $row['post_subtitle'] . "</h3>" . 
		  "<p" . $row['post_body'] . "</p>" .
		  "<p" . $row['created_on'] . "</p>"
		  ;
    	}
	  } else {
	  	echo '<p>No posts to display at present.</p>';
	  }
?>

[jcbones]

You will have to use the mysql functions and not mysqli, as you cannot mix the two.

 

<?php
        $db = new Database();

$q = "SELECT 
	post_id,
	post_title,
	post_subtitle, 
	post_body, DATE_FORMAT(post_created, '%M %D %Y') AS created_on,
	post_ext_link
	FROM blog 
	ORDER BY post_id DESC
	LIMIT 3";
  
        $r = $db->query($q); 
      if (mysql_num_rows($r) > 0) {	 
		  while ($row = mysql_fetch_assoc($r)) {
		  echo
		  "<h2>" . $row['post_title'] . "</h2>" .
		  "<h3" . $row['post_subtitle'] . "</h3>" . 
		  "<p" . $row['post_body'] . "</p>" .
		  "<p" . $row['created_on'] . "</p>"
		  ;
    	}
	  } else {
	  	echo '<p>No posts to display at present.</p>';
	  }
?>