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<?php $target_array = array( array("sss" => array("0"=>315, "1" => 330,"2"=>345)), array("EEE" => array("0"=>315, "1" => 330,"2"=>750)) ); $target_array = array_unique($target_array,SORT_REGULAR); print_r($target_array);
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Array ( [0] => Array ( [sss] => Array ( [0] => 315 [1] => 330 [2] => 345 ) ) [1] => Array ( [EEE] => Array ( [0] => 315 [1] => 330 [2] => 750 ) ) )

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135.74 ms | 405 KiB | 248 Q