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<? $age = array("Peter"=>"35","Ben"=>"37","Joe"=>""); $age2 = array("Peter"=>"38","Ben"=>"37","Joe"=>"43"); $result = array(); foreach($age as $key=>$val) { if (array_key_exists($key, $age2)) { if ($val!==$age2[$key]) $result[$key] = 'Changed from '.(empty($val)?'blank':$val).' to '. (empty($age2[$key])?'blanc':$age2[$key]); } else { $result[$key] = 'Changed from '.(empty($val)?'blank':$val).' to blank'; } } foreach($age2 as $key=>$val) { if (!array_key_exists($key, $age)) { $result[$key] = 'Changed from blank to ' . $val; } } var_dump($result); ?>
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