Fatal error: Uncaught Error: Call to undefined function - have to use $this

Question

Here is my code:

<?php

public function __construct() {
    getUsername();
}

public function getUsername() {
    //blah blah blah

    return "bobby";
}

?>

It does not work and it says this error:

Fatal error: Uncaught Error: Call to undefined function...

but if I call the function in my constructor like this: $this->getUsername(); it works. Why is that the case?

`$this->nameOfFunction()`, when they are in a class, they are called Methods. — Happy Coding, Feb 07 '17 at 03:52
read this answer to understand difference between method and function. http://stackoverflow.com/questions/155609/difference-between-a-method-and-a-function — isuruAb, Feb 07 '17 at 07:35

score 11 · Accepted Answer · edited May 23 '17 at 12:09

11

It cannot identify your method. We have to tell it to use getUsername() method which is in this class like this $this->getUsername(); $this-> is for find in this class. read this link

edited May 23 '17 at 12:09

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answered Feb 07 '17 at 03:55

isuruAb

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Fatal error: Uncaught Error: Call to undefined function - have to use $this

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