将csv列名与csv标题数组进行比较

Question

对不起，我在编辑我的问题。我真正的问题是要弄清楚如何在fillMapArray函数的$ csv_Column_name与readRow函数中存储在$ Csv_header_array中的值之间进行比较。此问题与两个csv表问题有关，因为存储csv列名的maps表中有两个csv文件加载到该表中。

public $table; 
public $filename; 
public $insert_chunk_size = 500; 
public $csv_delimiter = ','; 
public $offset_rows = 1; 
// Array to store Database column names 
public $mapping = []; 
public function setTableName($tablename) 
{ 
    $this->table = $tablename; 
} 
public function setFileName($filename) 
{ 
    $this->filename = $filename; 
} 
public function setColumnMapping() 
{ 
    //Retrieve the column names of the table 
    // and store them in the array 
    $columns = Schema::getColumnListing($this->table); 
    $i = 0; 
    while ($i < (sizeof($columns) - 1)) { 
     array_push($this->mapping, $columns[$i+1]); 
     $i++; 
    } 
} 
public function openCSV($filename) 
{ 
    if (!file_exists($filename) || !is_readable($filename)) { 
     Log::error("CSV insert failed" . $filename . "does not exist or is not readable"); 
    } 
    $handle = fopen($filename, 'r'); 
    return $handle; 
} 
public function seedFromCSV($filename, $deliminator = ',') 
{ 
    $handle = $this->openCSV($filename); 
    // CSV doesn't exist or couldn't be read from. 
    if ($handle === FALSE) 
     return []; 
    $header = NULL; 
    $row_count = 0; 
    $data = []; 
    // Array to store CSV Header column names 
    $Csv_header_array = []; 
    $mapping = $this->mapping ?: []; 
    $offset = $this->offset_rows; 
    while (($row = fgetcsv($handle, 0, $deliminator)) !== FALSE) 
    { 
     // Offset the specified number of rows 
     while ($offset > 0) 
     { 
      //If the row being read is the first, 
      //store the CSV header names in the array 
      $index = 0; 
      while ($index < sizeof($row)) { 
       array_push($Csv_header_array, $row[$index]); 
       $index++; 
      } 
      $offset--; 
      continue 2; 
     } 
     // No mapping specified - grab the first CSV row and use it 
     if (!$mapping) 
     { 
      $mapping = $row; 
     } 
     else 
     { 
      // Array to store a map of CSV column headers 
      // to the corresponding values 
      $source_array = $this->readRow($row, $Csv_header_array); 
      // Create a map of database column names to 
      // the corresponding values 
      $row = $this->fillMapArray($source_array, $mapping); 
      // insert only non-empty rows from the csv file 
      if (!$row) 
       continue; 
      $data[$row_count] = $row; 
      // Chunk size reached, insert 
      if (++$row_count == $this->insert_chunk_size) 
      { 
       //var_dump($this->insert($data)); 
       $this->insert($data); 
       $row_count = 0; 
       //var_dump($data[0]); 
       // clear the data array explicitly to 
       // avoid duplicate inserts 
       $data = array(); 
      } 
     } 
    } 
    // Insert any leftover rows 
    if (count($data) ) 
     $this->insert($data); 
    fclose($handle); 
    return $data; 
} 
public function readRow(array $row, array $Csv_header_array) 
{ 
    // Read the values of CSV column headers and map them 
    // into an array 
    $source_array = []; 
    foreach ($Csv_header_array as $index => $csvCol) { 
     if (!isset($row[$index]) || $row[$index] === '') { 
      $source_array[$csvCol] = NULL; 
     } 
     else { 
      $source_array[$csvCol] = $row[$index]; 
     } 
    } 
    return $source_array; 
} 
public function fillMapArray($source_array, $mapping) { 
    $row_values = []; 
    $columns = Schema::getColumnListing('maps'); 
    $no_of_columns_to_fill = sizeof($source_array); 
    // Retrieve the CSV column header corresponding to 
    // the Database column and store in a map 
    foreach($mapping as $dbCol) { 
     if ($dbCol === 'year') { 
      $row_values[$dbCol] = 2014; 
     } else { 
      if ($dbCol === 'School_ID') { 
       $temp1 = DB::Table('schools')->where('Unit_Id', '=', 
        $source_array['UNITID'])->value('School_ID'); 
       $row_values[$dbCol] = $temp1; 
      } else { 
       if ($no_of_columns_to_fill > 0) { 
        $csv_Column_name = DB::Table('maps')->where($columns[3], '=', $this->table) 
         ->where($columns[1], $dbCol)->value($columns[2]); 
        if ($csv_Column_name === Null) { 
         $no_of_columns_to_fill--; 
        } else { 
         $row_values[$dbCol] = $source_array[$csv_Column_name]; 
         $no_of_columns_to_fill--; 
        } 
       } 
      } 
     } 
    } 
    //var_dump($row_values); 
    return $row_values; 
} 
public function insert(array $seedData) 
{ 
    try { 
     DB::table($this->table)->insert($seedData); 
    } catch (\Exception $e) { 
     Log::error("CSV insert failed: " . $e->getMessage() . " - CSV " . $this->filename); 
     return FALSE; 
    } 
    return TRUE; 
} 

}

Answer 1

您可以使用Maatwebsite Laravel Excel包来获取CSV数据，然后将其映射到雄辩模型。示例如果您的CSV表格为users，那么您的型号将为User

因此，您可以从CSV中提取所有数据，然后将其映射到模型。

// This array will be created with the help of Laravel-Excel package 
$users = array(
    array('name'=>'Coder 1', 'rep'=>'4096'), 
    array('name'=>'Coder 2', 'rep'=>'2048'), 
    //... 
); 

// your second CSV file will also perform similar task and map it to same array 
$users[] = ['name' => 'Coder 3']; 

// Start bulk insert 
User::insert($users);