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Request #72252 change unset() to return true if the variable existed, or false if it did not
Submitted: 2016-05-22 19:33 UTC Modified: 2017-08-04 23:00 UTC
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: mvrk887 at hotmail dot com Assigned:
Status: Suspended Package: *General Issues
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
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 [2016-05-22 19:33 UTC] mvrk887 at hotmail dot com
as in summary, would be nice to have to avoid unnecessary lookups in userland


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 [2016-05-23 07:39 UTC]
-Package: PHP Language Specification +Package: *General Issues
 [2016-05-29 12:14 UTC]
I once opened a RFC about that one, but never pushed it to vote due to massive negative feedback.
 [2017-08-04 23:00 UTC]
-Status: Open +Status: Suspended
 [2017-08-04 23:00 UTC]
Thank you for your interest in PHP and for submitting a feature request. Please be aware that due to the magnitude of change this request requires, it would be necessary to discuss it on PHP Internals list ( as an RFC. Please read the guide about creating RFCs here:
If you haven't had experience with writing RFCs before, it is advised to seek guidance on the Internals list ( and/or solicit help from one of the experienced developers. 

Please to not consider this comment as a negative view on the merits of your proposal - every proposal which requires changes of certain magnitude, even the very successful and widely supported ones, must be done through the RFC process. This helps make the process predictable, transparent and accessible to all developers.
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