<?php $arr1 = [ 0 => "test zero", 1 => "test one", 2 => "test two", 3 => "test three" ]; $arr2 = [ 1 => "test four", 5 => "test five", 3 => "test six", 4 => "test seven" ]; $i=min(array_keys($arr1)); foreach($arr2 as $k=>$val) { if(array_key_exists($k,$arr1)) { $arr1[$k].='\N, '.$val; } } var_dump($arr1);
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