Why does PHP think my method is undefined? [duplicate]
Possible Duplicate:
PHP function Question
I asked this question earlier but I do not think I provided enough code for the question to be answered. I racking my brain on this and I cannot figure it out. The is the error
I am getting the error "Fatal error: Call to undefined method person::retrieve_full_name() in /home/mjcrawle/public_html/processlogin2.php on line 25"
Html page Processlogin2.php page:
<?php
/*include the class file*/
require_once('class/person_class.php');
$person = new Person;
/*instantiate the person object*/
$person->firstname = $_POST['firstname'];
$person->lastname = $_POST['lastname'];
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org /TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Process Login</title>
</head>
<body>
<p>
<?php
echo 'Your full name is ' . $person->retrieve_full_name() . '.';
?>
</p>
</body>
</html>
The is my Class form I created including all of my functions and attributes etc...
<?php
/*person*/
class person{
/*construct function*/
public function __contstruct() {
}/* This 开发者_开发百科end the Construct Functions*/
public function __destructor() {
}
/*class attribute*/
private $lastname;
private $firstname;
/*get function */
public function __get($name){
return $this-> $name;
}/* This ends the Get Functions*/
/*This function is going to have to parameters with it. We are going to add the this attribute to it.*/
public function __set($name, $value) {
$this ->$name=$value;
}/* This ends the Set Functions*/
public function __retrieve_full_name() {
$fullname = $this->firstname . ' . ' . $this->lastname;
return $fullname;
}/* This ends the Full Name Function*/
}
?>
You function is named __retrieve_full_name() and you're trying to call retrieve_full_name(). It can't work, you must rename your fonction in your class.
I think you misunderstood the concept of "magic" method in PHP. All classes in PHP have some methods already defined, these are called magic methods and all start with __ to differentiate from the method you write yourself. __set(), __get(), __construct and __destruct() are such methods.
If I can give you an advice, there's no need to declare a constructor or destructor if you leave them empty, you can safely remove them from your class.
Here's a new version of your Personn class which should work :
class person{
/*class attribute*/
private $lastname;
private $firstname;
/*get function */
public function __get($name){
return $this-> $name;
}/* This ends the Get Functions*/
/*This function is going to have to parameters with it. We are going to add the this attribute to it.*/
public function __set($name, $value) {
$this ->$name=$value;
}/* This ends the Set Functions*/
public function retrieve_full_name() {
return $this->firstname . ' . ' . $this->lastname;
}/* This ends the Full Name Function*/
}
If you refer to here
There is only specific times when you should consider using the magic methods. I believe your __retrieve_full_name() should not be one of those execeptions.
It is recommended that you do not use function names with __ in PHP unless you want some documented magic functionality.
Hope this helps.
加载中,请稍侯......
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