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<?php $labels_array=array("Element 1","Element 2","Element 3","Element 4","Element 5","Element 6"); echo implode("\n",array_map(function($i){ return implode(", ",$i); },array_chunk($labels_array,2)));
Output for git.master, git.master_jit, rfc.property-hooks
Element 1, Element 2 Element 3, Element 4 Element 5, Element 6

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