Some entity based table design idea i have

profile_entitynode.php

/*Profile node helps to segragate the actual query sql from the model code*/
class Profile_node {
	public $CInst;
    private $dB;
    public $profile_id;
    public $social_keys;
	public function __construct($profile_id) {
		$this->CInst =& get_instance();
		$this->dB = $this->CInst->db->database;
		$this->profile_id = $profile_id;
		var_dump($profile_id);
		$this->social_keys = array('linkedin','twitter','facebook','github');
	}

	public function getTestimonials(){
       $query = "SELECT * FROM testimonial WHERE tesstimonial_userpid";
	}

	public function getMeta() {
	   $social = $this->getSocial();
	   $interests = $this->getProfileInterests();
	   return array('getProfileSocial' => $social,
	   		'getProfileInterests' => $interests);
	}

	public function getSocial() {
		$where = '';
		$meta = 'profilemeta_';
		foreach($this->social_keys as  $val) {
			$where .=  "`". $meta."key` = '". $val . "' OR ";
		}
		$where = substr($where,0,-3);
		$query = $this->CInst->db->query("SELECT `profilemeta_value` FROM profilemeta WHERE ".$where);
		return $query;
	}
	public function getProfileInterests() {
    //pykoboxc_sensei
		$select = 'SELECT `profilemeta_value`';
		$tbl = '`'. $this->dB. '`.profilemeta';
		$where = "`key` = 'interest'";
	    $query = $this->CInst->db->query($select . ' FROM '.$tbl . ' LIMIT 10');
	    return $query;
	}