<?php
$arr1 = array(
    0 => array(
            'translator_id' => 1,
            'words_translated' => 12,
        ),
    1 => array(
            'translator_id' => 2,
            'words_translated' => 34,
        ),
    2 => array(
            'translator_id' => 3,
            'words_translated' => 56,
        ),
 
);
 
$arr2 = array(
    0 => array(
            'translator_id' => 1,
            'languages' => "english, french",
        ),
    1 => array(
            'translator_id' => 2,
            'languages' => "japanese, chinese",
        ),
    2 => array(
            'translator_id' => 3,
            'languages' => "german, russian",
        ),
);
 
print_r(array_map("array_merge",$arr1,$arr2));
?>

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