Question

I’m newish to PHP and OOP and I have been using the PDO class to connect and retrive info from my MYSQL database. Below is and excerpt of the files in question:

lyrics.class.php

<?php 
class lyrics{

public $con;
public $kill;
public function __construct(connection $con){

    $this->con = $con->con;     
}

public function getLyricsFromURL($lyricsid){
    $results;

    $getlyrics = $this->con->prepare("SELECT * FROM `lyrics` WHERE lyrics_id = :lyricsid");
    $getlyrics->bindParam(':lyricsid',$lyricsid,PDO::PARAM_INT);
    $getlyrics->execute();
    $results = $getlyrics->fetchAll(PDO::FETCH_OBJ);


    foreach ($results as $result) {

        echo $result->lyrics_content;


    }

}

index.php:

<?php
include 'inc/header.php';
include 'libs/connection.class.php';
include 'libs/lyrics.class.php';

$conn = new connection();
$lyrics = new lyrics($conn);

$lyrics->getLyricsFromURL(55);


?>

<h1><?php echo $lyrics->result->lyrics_title;?></h1>

OTHERS:
there is a connection class in another file but i won’t show it here, just know that the connection works.

The problem:*
The problem I’m having is i want to echo out individual column of results from the **getLyricsFromURL() method in the lyrics class, I have tried but it doesn’t work.

What is the correct way to do this?

Thanks in advance.

Answer 1

The method getLyricsFromURL() is setup to return an array of elements, but you are referencing the return value as a single element, try this:

public function getLyricsFromURL($lyricsid){

    // This isn't necessary
    //$results;

     // Better to use $stmt as the variable here, obviously this is subjective
     // but will serve you better when you are working on other stmt objects
     $stmt = $this->con->prepare("SELECT * FROM `lyrics` WHERE lyrics_id = :lyricsid");

     $stmt->bindParam(':lyricsid', $lyricsid,PDO::PARAM_INT);
     $stmt->execute();

     $results = $stmt->fetchAll(PDO::FETCH_OBJ);

     return $results;
}

...

// Instatiate our lyrics object
$lyric = new lyrics($conn);

// Make request for lyrics associated to row #55 and store results in local var
$lyrics = $lyric->getLyricsFromURL(55);

// Notice we are referencing the first element of the array
<h1><?php echo $lyrics[0]->lyrics_title;?></h1>