Php 比较csv列名与csv标题数组
很抱歉,我正在编辑我的问题。我真正的问题是如何在fillMapArray函数的$csv_列_名称与readRow函数中存储在$csv_头_数组中的值之间执行比较。此问题与“两个csv一个表”问题有关,因为存储csv列名的映射表中加载了两个csv文件Php 比较csv列名与csv标题数组,php,laravel,csv,Php,Laravel,Csv,很抱歉,我正在编辑我的问题。我真正的问题是如何在fillMapArray函数的$csv_列_名称与readRow函数中存储在$csv_头_数组中的值之间执行比较。此问题与“两个csv一个表”问题有关,因为存储csv列名的映射表中加载了两个csv文件 public $table; public $filename; public $insert_chunk_size = 500; public $csv_delimiter = ','; public $offset_rows = 1; // Ar
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 " . $this->filename);
return FALSE;
}
return TRUE;
}
public$表;
public$filename;
公共$insert\u chunk\u size=500;
公共$csv_分隔符=',';
公共$offset_行=1;
//用于存储数据库列名的数组
公共$mapping=[];
公共函数setTableName($tablename)
{
$this->table=$tablename;
}
公共函数setFileName($filename)
{
$this->filename=$filename;
}
公共函数setColumnMapping()
{
//检索表的列名
//并将它们存储在数组中
$columns=Schema::getColumnListing($this->table);
$i=0;
而($i<(sizeof($columns)-1)){
数组推送($this->mapping,$columns[$i+1]);
$i++;
}
}
公共函数openCSV($filename)
{
如果(!file_存在($filename)| |!是否可读($filename)){
日志::错误(“CSV插入失败”。$filename。“不存在或不可读”);
}
$handle=fopen($filename,'r');
返回$handle;
}
公共函数seedFromCSV($filename,$deliminator=','))
{
$handle=$this->openCSV($filename);
//CSV不存在或无法从中读取。
如果($handle==FALSE)
返回[];
$header=NULL;
$row\U count=0;
$data=[];
//用于存储CSV标题列名的数组
$Csv_头_数组=[];
$mapping=$this->mapping?:[];
$offset=$this->offset\u行;
while(($row=fgetcsv($handle,0,$deliminator))!==FALSE)
{
//偏移指定的行数
而($offset>0)
{
//如果正在读取的行是第一行,
//将CSV头名称存储在数组中
$index=0;
而($indexreadRow($row,$Csv\u header\u array);
//创建数据库列名到的映射
//相应的值
$row=$this->fillMapArray($source\u array,$mapping);
//仅插入csv文件中的非空行
如果(!$row)
继续;
$data[$row\U count]=$row;
//已达到块大小,请插入
如果(++$row\u count==$this->insert\u chunk\u size)
{
//变量转储($this->insert($data));
$this->insert($data);
$row\U count=0;
//var_dump($data[0]);
//明确清除数据数组以
//避免重复插入
$data=array();
}
}
}
//插入任何剩余的行
如果(计数($数据))
$this->insert($data);
fclose($handle);
返回$data;
}
公共函数readRow(数组$row,数组$Csv\u头\u数组)
{
//读取CSV列标题的值并将其映射
//排成一列
$source_array=[];
foreach($Csv\u header\u数组作为$index=>$csvCol){
如果(!isset($row[$index])| |$row[$index]=''){
$source_数组[$csvCol]=NULL;
}
否则{
$source_数组[$csvCol]=$row[$index];
}
}
返回$source_数组;
}
公共函数fillMapArray($source\u array,$mapping){
$row_值=[];
$columns=Schema::getColumnListing('maps');
$no_of_columns_to_fill=sizeof($source_数组);
//检索对应于的CSV列标题
//数据库列和存储在映射中
foreach($dbCol映射){
如果($dbCol=='year'){
$row_值[$dbCol]=2014;
}否则{
如果($dbCol=='School\u ID'){
$temp1=DB::Table('schools')->其中('Unit_Id','=',
$source_数组['UNITID'])->值('School_ID');
$row_值[$dbCol]=$temp1;
}否则{
如果($no_of_columns_to_fill>0){
$csv_Column_name=DB::Table('maps')->其中($columns[3],'=',$this->Table)
->其中($columns[1],$dbCol)->值($columns[2]);
如果($csv\u列\u名称===Null){
$no_of_columns_to_fill--;
}否则{
$row_values[$dbCol]=$source_数组[$csv_Column_name];
$no_of_columns_to_fill--;
}
}
}
}
}
//变量转储(行值);
返回$row_值;
}
公共函数插入(数组$seedData)
{
试一试{
DB::table($this->table)->insert($seedData);
}捕获(\异常$e){
日志::错误(“CSV插入失败:”.e->getMessage()。“-CSV”。$this->filename);
返回FALSE;
}
返回TRUE;
}
}您可以使用软件包获取CSV数据,然后将其映射到Elounce模型。示例:如果您的CSV表是用户
,则您的模型将是用户
所以您可以从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);
您可以使用包获取CSV数据,然后将其映射到Elounce模型。示例:如果您的CSV表是用户
,则您的模型将是用户
所以您可以从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);