<?php $ar1 = ['sdasd'=>[2,3,5,7], 'grtgtr'=>[1,2,7,8]]; $ar2 = ['sdasd'=>[2,3], 'grtgtr'=>[1,2]]; foreach($ar1 as $key=>&$subar){ $subar = array_merge($subar,$ar2[$key]); } print_r($ar1);
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