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<?php $data = [['el1','el2'],['el3','el4'],]; function add_el($data,$elem){ foreach($data as $ind=>&$ar){ $ar[] = $elem; } return $data; } $el = 'el new'; print_r(add_el($data,$el));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => el1 [1] => el2 [2] => el new ) [1] => Array ( [0] => el3 [1] => el4 [2] => el new ) )

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