Posted by Jordan Miller on 08/25/05 02:10

General question,

Is there a technical reason why PHP does not allow comparison
operator expressions like the following:

if (2 < $x <= 4) {}


I prefer this concise way as it is common for mathematics
expressions, and much easier to grasp physically on first glance.
From what I can tell, this expression can currently only be written as:

if ( $x > 2 && $x <= 4) {}


Would adding this syntax to PHP be incredibly difficult or lead to
performance slowdowns?

I think I remember reading that PHP always evaluates expressions from
right to left, so I guess there may be a considerable codebase change
required. Maybe there could be a default function workaround for this
or some other way to automagically process these more concise
expressions without too much of a slowdown?? Just curious.

Jordan

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