按特殊要求向数组中补全元素

<?php//Initial data array $data = array('Year' => array( // Category'2000','2000','2000','2001','2001','2002','2002','2003'),'Country' => array( // Serie'US','SE','JP','US','SE','US','JP','US'),'PO Numbers' => array( // Measure50,40,30,60,50,70,20,80));//Expect result/*$data = array('Year' => array( // Category'2000','2000','2000','2001','2001','2001', //new add'2002','2002', //new add'2002','2003','2003', //new add'2003' //new add),'Country' => array( // Serie'US','SE','JP','US','SE','JP', //new add'US','SE', //new add'JP','US','SE', //new add'JP' //new add),'PO Numbers' => array( // Measure50,40,30,60,50,0 , //new add70,0 , //new add20,80,0 , //new add0 //new add));*///////////////////////////////////////////////// Code ///////////////////////////////////////////////$count = count(current($data));for($i = 0; $i < $count; $i++){$data['Year-Country'][$i] = $data['Year'][$i].'-'.$data['Country'][$i]; }$uniqueSerieData = array_unique($data['Country']);$uniqueCatData = array_unique($data['Year']);$totalCount = count($uniqueSerieData) * count($uniqueCatData);$uniqueData = array();$i = 0;foreach($uniqueCatData as $ucd){foreach($uniqueSerieData as $usd){$uniqueData[$i]['Year'] = $ucd;$uniqueData[$i]['Country'] = $usd;$i += 1;}}$outputData = array();for($i = 0; $i < $totalCount; $i++){$uData = $uniqueData[$i]['Year'].'-'.$uniqueData[$i]['Country']; $flag = array_keys($data['Year-Country'],$uData);if($flag){$j = $flag[0];$outputData['Year'][$i] = $data['Year'][$j];$outputData['Country'][$i] = $data['Country'][$j];$outputData['PO Numbers'][$i] = $data['PO Numbers'][$j];} else {$outputData['Year'][$i] = $uniqueData[$i]['Year'];$outputData['Country'][$i] = $uniqueData[$i]['Country'];$outputData['PO Numbers'][$i] = 0;}}print_r($outputData);