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Request #40438 Use mathematical sets in if conditions
Submitted: 2007-02-11 23:28 UTC Modified: 2020-11-23 15:40 UTC
Avg. Score:4.0 ± 1.0
Reproduced:2 of 2 (100.0%)
Same Version:2 (100.0%)
Same OS:2 (100.0%)
From: anmeldung at snowgarden dot ch Assigned:
Status: Suspended Package: Scripting Engine problem
PHP Version: 5.2.1 OS: Irrelevant
Private report: No CVE-ID: None
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 [2007-02-11 23:28 UTC] anmeldung at snowgarden dot ch
It would be nice, if you can use some mathematical sets in if conditions. This would help to filter input values like integers, string and floats.
For example if you'll check if an input value within your range:
Normal representation -> if ($input >= 0 && $input <= 2)
Math. Set representation -> if ($input === [0; 2])

You can use braces (but they are used in PHP) to represent sets of string or numbers like -> colors === {'red', 'blue', 'yellow'}

There is also an international standard (ISO 31-11) that defines sets (


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 [2016-12-30 23:58 UTC]
-Package: Feature/Change Request +Package: Scripting Engine problem
 [2020-11-23 15:40 UTC]
-Status: Open +Status: Suspended
 [2020-11-23 15:40 UTC]
This feature needs discussion for which this bug tracker is not
really suitable.  Therefore, I you, or anybody else, is still
interested in this, please forward your request to the internals
mailing list.  For the time being, I'm suspending this ticket.
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