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Suppose I have the following code:
a.php
<?
class H{
public $i = 123;
public function S(){
require "b.php";
die;
}
}
$i = new H();
$i -> S();
b.php
<?
echo $i->i;
However, system throws an error in file b.php that variable i is not defined.
How can I fix this problem?
If it's possible, could someone kindly tell me why this is happening?
You should never include a file like that in case of OOP. As oop and procedural PHP is different. Whenever you want to echo anything inside the class you should use $this keyword that signifies that you are working in context of current class object. So thats why your code is not working and you are getting that variable i is not defined. As nathanael said its not an elegant way of coding
you can write in b.php
echo $this->i;
and that would work, but that is not an elegant way of coding,
alternatively you can make$i accessible inS() ina.php you would have
public function S(){
global $i;
require "b.php";
die;
}
And that would work also, but is no more elegant
when you requireb.php in the methodS(), it will inject the code fromb.php inside the methodS(), and there is no variable$i
you have a global variable$i, which is not accessible fromS() unless you explicitly make it accessible
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
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