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<?php $arr =[ 'TEAM1' => 113.03, 'TEAM2' => 103.52, ]; $str = 'TEAM2'; $notTeam2 = array_diff_keys($arr, [$str => null]); var_dump($notTeam2);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function array_diff_keys() in /in/h4u9s:9 Stack trace: #0 {main} thrown in /in/h4u9s on line 9
Process exited with code 255.

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