PHP object _construct function

Question

I have the following code

<!doctype html>
<head>
<meta charset = "utf-8">

<title>Objects</title>
</head>

<body>

    <?php

    class firstClass
    {
        function _construct($param)
        {
            echo "Constructor called with parameter $param";
        }
    }

    $a = new firstClass('one');
    ?>

</body>
</html>

When i run this code nothing is outputted in the browser, the tutorial i am following says this code should output "Constructer called with parameter apples", what is the problem?

Halfstop · Accepted Answer · 2015-02-16 17:46:00Z

4

The constructor should be __construct() with two underscores.

http://php.net/manual/en/language.oop5.decon.php

And it will output "Constructor called with parameter one" in your code.

answered Feb 16, 2015 at 17:46

Halfstop

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4 Comments

Halfstop Over a year ago

No problem, we were all newbies at one point. Glad I could help. Can you mark my answer as the correct one?

icecub Over a year ago

Actually shouldn't he echo $a aswell? Looks like he's only creating the object

Halfstop Over a year ago

@icecub No, he's echoing in the constructor.

Justin Over a year ago

@gnarly it says i have to wait five more minutes but i will when the time is up

Kheshav Sewnundun · Accepted Answer · 2015-02-16 17:58:41Z

0

You have missed a '_' in the constructor definition.

function _construct($param) => defines a function called _construct with one parameter
function __construct($param) => defines custom constructor with one parameter

The code should be like this:

<?php

    class firstClass
    {
         function __construct($param)
        {
            echo "Constructor called with parameter $param";
        }
    }

    $a = new firstClass('one');
?>

edited Feb 16, 2015 at 17:58

answered Feb 16, 2015 at 17:51

Kheshav Sewnundun

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