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@ 2015-09-22T21:15:41Z

<?php

$arr =[
    'TEAM1' => 113.03,
    'TEAM2' => 103.52,
];

$str = 'TEAM2';
$notTeam2 = array_diff_keys($arr, [$str => null]);

var_dump($notTeam2);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive preview

42.81 ms | 402 KiB | 5 Q