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<?php $json = '{"GetCodeResult": { "Selling":"1000.67114", "Buying":"9000.65789" } }'; echo json_encode(json_decode($json, true)['GetCodeResult']);
Output for 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
{"Selling":"1000.67114","Buying":"9000.65789"}

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157.14 ms | 407 KiB | 5 Q