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csvから取得した値を1件ずつ処理して出力

Posted at
<?php 
    $lines = file('readfile.csv');

    $cnt = count($lines);//レコード数
    $i = 0;
    
    $fp = fopen('php://temp', 'w');//一時ファイル
    
    while($i<$cnt){
        $data = explode(',',$lines[$i]);

        //ここで色々な処理

        mb_convert_variables('SJIS-win', 'UTF-8', $data);//文字コード変換
        fputcsv($fp, array_values($data));//一時ファイルに1件書き出し

        ++$i;
    }

    rewind($fp);//ファイルポインタを先頭に戻す
	file_put_contents("outputfile.csv", stream_get_contents($fp));//出力
    fclose($fp);
 ?>

参考
PHPでCSVファイルの書き込みを行う方法
PHPで容量の大きいデータをCSV出力するときに工夫したこと

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