Show an integer as binary number
Array ( [0] => Array ( [title] => L14A [link] => https://www.youtube.com/embed/Sxt6rkSUQmg ) [1] => Array ( [title] => L14B [link] => https://www.youtube.com/embed/FcRzHSv_iZg ) [2] => Array ( [title] => L14C [link] => https://www.youtube.com/embed/MCArJ1Ko3eU ) [3] => Array ( [title] => L14D [link] => https://www.youtube.com/embed/BZgKU2yma-Q ) )
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