classes$function

[fluteofliar]

In php,AFAIK dollarsign($) is part of variable thatswhy we always variable

using this sign........

Now,whats wrong when i use the above defination while accessing a member variable of a class using object, for instance

<?php

class hello

{

public $a="php seems sometime illogical";

function _construct()

{

echo "howz your php experience?";

}

}

$obj=new hello();

$obj->a;//this works fine

$ob->$a;//error::can,t acess empty property?

 

2)does function are define at the point they call in php?

why its necessary to call inner function first before outer function in nested function

[Alex]

In that context $a has no value. So you're trying to access a property with a null name, which obviously doesn't exist. You could however do this:

 

$a = 'a';
$ob->$a;

 

When calling the property of a class you just don't use the dollar sign in front of the variable name, that's just how it is.

[fluteofliar]

In that context $a has no value. So you're trying to access a property with a null name, which obviously doesn't exist. You could however do this:

$a has value but while accessing it like

obj->$a ... it means we are trying to acess the property of object which is refer as $$a inside the object

but the property $($a) is empty....well thankz mate for taking pain to reply my quest