PHP reads csv data line by line into the database

Requirement: Import the csv data exported from the Excel file into the database

The solution is as follows:

 // 判断文件是否上传成功
        if (empty($_FILES['file1']) && $_FILES['file1']['error'] != 0) {
            return 'Error file1';
        } else {
            $filename = $_FILES['file1']['tmp_name'];
        }

        // 组装数据
        $fields = ['name', 'age', 'telephone'];
        $fields_cnt = count($fields);
        
        // 用二进制打开文件，避免编码问题
        $fp_in = @fopen($filename, "rb");
        while (!feof($fp_in)) {
            $line = fgets($fp_in);
            if ($line) {
                $arr = explode(',', $line);
                // 待插入数据格式化
                $fmt = array_map(function ($v) {return ($v == 0) ? $v : ((int) $v);}, $arr);
                $data[] = array_combine($fields, array_splice($fmt, 1, $fields_cnt));
            }
        }
        fclose($fp_in);

        // TP数据批量入库
        $q = M("excel_1")->addAll($data);

Summary:

File operation function series: fopen,feof,fgets,fclose respectively open, find, fetch, close Data, formatting can automatically remove the "symbol

array_combine key value merging array.

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