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In PHP why is using global like in the example below considered bad? $a = 1; class foo { public function bar() { global $a; // <-- Why is this considered bad? } } ...
#1: Initial revision
by
Vanity Slug ❤️
·
2024-03-27T12:58:43Z (8 months ago)
PHP - Why using "global" considered bad?
In PHP why is using `global` like in the example below [considered bad](https://stackoverflow.com/questions/8488407/php-global-variable-scope-inside-a-class#comment-10502390)?
```
$a = 1;
class foo
{
public function bar()
{
global $a; // <-- Why is this considered bad?
}
}
```
I want a concrete example(s) of what can go wrong with this code.