我有一个csv文件，看起来像这样
$lines[0] = "text, with commas", "another text", 123, "text",5;
$lines[1] = "some without commas", "another text", 123, "text";
$lines[2] = "some text with commas or no",, 123, "text";
我想要一张桌子：
$t[0] = array("text, with commas", "another text", "123", "text","5");
$t[1] = array("some without commas", "another text", "123", "text");
$t[2] = array("some text, with comma,s or no", NULL , "123", "text");
如果我使用split($lines[0],",")，我会"text" ,"with commas" ...
有没有优雅的方法呢？
答案 0 :(得分：28)
您可以使用fgetcsv来解析CSV文件，而无需担心自己解析它。
PHP手册中的示例：
$row = 1;
if (($handle = fopen("test.csv", "r")) !== FALSE) {
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
$num = count($data);
echo "<p> $num fields in line $row: <br /></p>\n";
$row++;
for ($c=0; $c < $num; $c++) {
echo $data[$c] . "<br />\n";
}
}
fclose($handle);
}
答案 1 :(得分：18)
除了Matt's suggestion之外，您还可以使用SplFileObject来读取文件：
$file = new SplFileObject("data.csv");
$file->setFlags(SplFileObject::READ_CSV);
$file->setCsvControl(',', '"', '\\'); // this is the default anyway though
foreach ($file as $row) {
list ($fruit, $quantity) = $row;
// Do something with values
}
来源：http://de.php.net/manual/en/splfileobject.setcsvcontrol.php
答案 2 :(得分：3)
这里也是一个获取读取csv文件的简单方法。
$sfp = fopen('/path/to/source.csv','r');
$dfp = fopen('/path/to/destination.csv','w');
while ($row = fgetcsv($sfp,10000,",","")) {
$goodstuff = "";
$goodstuff = str_replace("¦",",",$row[2]);
$goodstuff .= "\n";
fwrite($dfp,$goodstuff);
}
fclose($sfp);
fclose($dfp);
答案 3 :(得分：1)
您可以使用以下功能读取数据。
function readCSV() {
$csv = array_map('str_getcsv', file('data.csv'));
array_shift($csv); //remove headers
}
http://www.pearlbells.co.uk/how-to-sort-a1a2-z9z10aa1aa2-az9az10-using-php/
答案 4 :(得分：1)
也许我的代码可以解决您的问题：
// Parse all content from csv file and generate array from line.
function csv_content_parser($content) {
foreach (explode("\n", $content) as $line) {
// Generator saves state and can be resumed when the next value is required.
yield str_getcsv($line);
}
}
// Get content from csv file.
$content = file_get_contents('your_file.csv');
// Create one array from csv file's lines.
$data = array();
foreach (csv_content_parser($content) as $fields) {
array_push($data, $fields);
}
结果是您得到一个包含csv中所有值的数组。 就像这样：
Array
(
[0] => Array
(
[0] => text, with commas
[1] => another text
[2] => 123
[3] => text
[4] => 5
)
[1] => Array
(
[0] => some without commas
[1] => another text
[2] => 123
[3] => text
)
[2] => Array
(
[0] => some text, with comma,s or no
[1] => NULL
[2] => 123
[3] => text
)
)
答案 5 :(得分：0)
您可以使用允许列映射的https://github.com/htmlburger/carbon-csv之类的内容：
$csv = new \Carbon_CSV\CsvFile('path-to-file/filename.csv');
$csv->set_column_names([
0 => 'first_name',
1 => 'last_name',
2 => 'company_name',
3 => 'address',
]);
foreach ($csv as $row) {
print_r($row);
}
以下代码的结果如下：
Array
(
[0] => Array
(
[first_name] => John
[last_name] => Doe
[company_name] => Simple Company Name
[address] => Street Name, 1234, City Name, Country Name
)
[1] => Array
(
[first_name] => Jane
[last_name] => Doe
[company_name] => Nice Company Name
[address] => Street Name, 5678, City Name, Country Name
)
)
另一个执行相同操作的库（以及更多内容）是http://csv.thephpleague.com/9.0/reader/
答案 6 :(得分：0)
如果要保留多维结果数组的索引（第一行），可以使用：
$delim = ';';
$csvFile = file($csv_file);
$firstline = str_getcsv($csvFile[0], $delim);
$data = array();
foreach ($csvFile as $line) {
$line = str_getcsv($line, $delim);
$data[] = array_combine($firstline, $line);
}
答案 7 :(得分：0)
我构建了一个应用程序，用于从CSV文件中提取数据，该php应用程序用于向用户显示每日报价。
github上的完整项目：365-quotes-php-csv。
这也是我构建的应用程序的类代码
<?php
/*
Main Class
please note :
1- the CSV file must be comma separated (,) and each line must End with (;).
2- Feel free to edit the all.CSV file and add all of your 366 New Quotes.
3- don't change any thing specially the CSV file Location.
---------------------------------------------------------------------------
RISS.WORK all copy rights reserved 2018
please Don't Remove
Github/RissWork
Email : info@riss.work
*/
class Quote{
//properties
private $_quote,$_allQuotes;
private static $_instance = null;
//Constructor
private function __construct(){
//Day Count
$dayCount = date(z);
if($this->readCsvAndGetQuote($dayCount)){
return $this->getQuote();
}else{
echo 'Error Cannot open the .CSV File';
}
}
//Methods
//get Instance
public function getInstance(){
if(!isset(self::$_instance)){
self::$_instance = new Quote();
}
return self::$_instance;
}//end of get Instance
//get daily Quote
public function getQuote(){
return $this->_quote;
}//end of get Quote
//Read CSV
private function readCsvAndGetQuote($dayCount = 1 ){
if(($handel = fopen("csv/all.csv" , "r")) !== false){
$this->_allQuotes = fgetcsv($handel,1000000,';');
$this->_quote = explode(',',$this->_allQuotes[$dayCount]);
return true;
}
return false;
}//end of read CSV
}//end of Class
答案 8 :(得分：0)
返回具有感兴趣的列的php映射数组：
public function extractCSVDatas($file_uri) {
$AliasToSystemPathMappingArray = [];
if (($handle = fopen($file_uri, "r")) !== FALSE) {
$csv = array_map('str_getcsv', file($file_uri));
//remove header and choose columns among the list:
foreach((array_slice($csv,1)) as $line) {
list($id, $alias, $systemPath) = explode(';',$line[0]);
$AliasToSystemPathMappingArray[] = [$alias, $systemPath];
}
fclose($handle);
}
return $AliasToSystemPathMappingArray;
}
答案 9 :(得分：0)
/**
* @return mixed[]
*/
public function csvToArray(string $delimiter, string $filename = ''): array
{
$data = [];
if (file_exists($filename) && is_readable($filename)) {
$header = null;
if (($handle = fopen($filename, 'r')) !== false) {
while (($row = fgetcsv($handle, 1000, $delimiter)) !== false) {
if (!$header) {
$header = $row;
} else {
$data[] = array_combine($header, $row);
}
}
fclose($handle);
}
}
return $data;
}
答案 10 :(得分：0)
既然可以复杂，为什么还要简单？
别开玩笑了，这里有一个使用 PHP 函数 str_getcsv()
这是一个例子：
function parse_csv( $filename_or_text, $delimiter=',', $enclosure='"', $linebreak="\n" )
{
$return = array();
if(false !== ($csv = (filter_var($filename_or_text, FILTER_VALIDATE_URL) ? file_get_contents($filename_or_text) : $filename_or_text)))
{
$csv = trim($csv);
$csv = mb_convert_encoding($csv, 'UTF-16LE');
foreach(str_getcsv($csv, $linebreak, $enclosure) as $row){
$col = str_getcsv($row, $delimiter, $enclosure);
$col = array_map('trim', $col);
$return[] = $col;
}
}
else
{
throw new \Exception('Can not open the file.');
$return = false;
}
return $return;
}
想象一下，您需要一个可以处理 URL 和逗号分隔文本的函数。这正是这样工作的功能。只需插入一个 CSV URL 或逗号分隔的文本，它就可以很好地工作。
答案 11 :(得分：0)
刚刚创建了一个函数，可以从 .csv 文件或 csv 格式的文本中提取数据，然后对其进行解析以方便使用（假设第一行是列）。适用于您想要/拥有的多行/多列，只需简单地将函数指向文件位置/字符串，它就会返回结果！
function csvParse($input, $callback = false){
$results = [];
$raw_array = (is_file($input)) ? array_map('str_getcsv', file($input)) : array_map('str_getcsv', explode("\n", $input));
$array = array_splice($raw_array, 1, count($raw_array));
foreach($raw_array[0] as $c) $columns[] = $c;
foreach($array as $key0 => $val0)
foreach($val0 as $key1 => $val1)
$results[$key0][$columns[$key1]] = $val1;
if(is_callable($callback)) call_user_func_array($callback, array($results));
else return $results;
}
# Either One Would Work
$input = "dir/file.csv";
$input = "name,age,occupation,city\nCrimin4L,24,Programmer,New York\nMrAwesome,20,Gamer,Los Angeles";
# Usage #1
$array = csvParse($input);
var_export($array);
# Usage #2
csvParse($input, function($array){
var_export($array);
});
输入：
name,age,occupation,city
Crimin4L,24,Programmer,New York
MrAwesome,20,Gamer,Los Angeles
数组输出：
array (
0 =>
array (
'name' => 'Crimin4L',
'age' => '24',
'occupation' => 'programmer',
'city' => 'New York',
),
1 =>
array (
'name' => 'MrAwesome',
'age' => '20',
'occupation' => 'gamer',
'city' => 'Los Angeles',
),
)