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@ 2017-08-10T14:24:11Z

<?php

$a =[[1],[2],[2],[4],[5],[5],[3]];

Foreach($a as $b){
   Echo $b[0]. "\n";
   If(next($a)[0] != $b[0]) echo "\n";
}

Output
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next: documentation ( source)

preferences:dark modelive previewkey bindings

27.18 ms | 404 KiB | 5 Q