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Request #73125 array declaration shouldn't allow same key multiple times
Submitted: 2016-09-20 11:20 UTC Modified: 2018-12-12 17:12 UTC
Avg. Score:1.0 ± 0.0
Reproduced:0 of 2 (0.0%)
From: sami dot vento at codeworks dot fi Assigned:
Status: Open Package: Arrays related
PHP Version: 7.0.11 OS:
Private report: No CVE-ID: None
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From: sami dot vento at codeworks dot fi
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 [2016-09-20 11:20 UTC] sami dot vento at codeworks dot fi
Defining array with single clause should check duplicate keys and at least warn user. Current implementation just takes last defined value for key.

Test script:
$a = array('a'=>3, 'a'=>4);

Expected result:
notice, warning or error

Actual result:
array(1) {


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 [2018-12-12 09:26 UTC] daniele dot maggio at dotnext dot it
Sorry but I think it's not a bug;

it is correct that your value is overwrited since you use a text key, The matter is how you use things.
 [2018-12-12 17:12 UTC]
Personally, I would be disappointed to see this implemented as I sometimes use it in place of a long if or ternary, like

$value = [
  true => "default", // lowest priority
  $some_condition => "some value",
  $other_condition => "other value",
  $final_condition => "final value" // highest priority
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