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<?php $arr = [0=>[id=>105, bla=>"sd"], 1=>[id=>300, bla=>"mvk"]]; $fixed = []; foreach ($arr as $a) { $fixed[$a["id"]] = $a; } unset($arr); var_dump($fixed);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "id" in /in/15iEJ:3 Stack trace: #0 {main} thrown in /in/15iEJ on line 3
Process exited with code 255.

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