On Fri, Jan 30, 2015 at 11:16:41AM +0100, Martin Keckeis wrote:
> >
> > You might get more approval for: declare(strict=1);
> >
> > I would like to see this to help catch typeos in variable names. If a
> > variable
> > is assigned and it does not already exist some sort of error would be
> > raised.
> > The inspiration of this is from Perl where 'use strict' does this.
> >
> > How to declare a variable ? The keyword 'var' exists, it is only used in
> > classes
> > but could be used to declare variables in functions and at the top level.
> >
> > Thus:
> >
> > declare(strict=1);
> >
> > var $foo; // Declared but not given a value - so give it NULL
> > var $bar = 1;
> >
> > $foo = 234;
> >
> > $baz = 10; // This would error - $baz is a typeo for $bar
> >
> >
> You can achieve that already quiet simple
> <?php
> error_reporting(E_ALL);
>
> set_error_handler(function($errno, $errstr, $errfile, $errline){
> throw new \Exception($errstr);
> });
>
> $a = $b;
That catches the use of an undefined variable $b.
What I am talking about is assignment to an *undeclared* variable $baz (or $a).
This is not caught by your code - PHP does not have a concept of declaring
variables.
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Alain Williams
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