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<?php $a = [ [ 'foo' => 777.5 ], [ 'foo' => 777 ], [ 'foo' => '777' ], ]; var_dump(array_column($a, 'foo', 'foo'));
Output for git.master
Deprecated: Implicit conversion from float 777.5 to int loses precision in /in/WhUmh on line 9 array(1) { [777]=> string(3) "777" }

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