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<?php
 
$array = [
	[3 => 'a'], [2 => 'b'], [3 => 'c'], [3 => 'd'], [4 => 'r']
];
$newArray = array_column($array, 3);
print_r($newArray);

Success #stdin #stdout 0.01s 82560KB

stdin

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Standard input is empty

stdout

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Array
(
    [0] => a
    [1] => c
    [2] => d
)

https://ideone.com/Oq9BGa

language:

PHP (php 7.3.5)

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public

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