[英]How to read CSV file buffer and convert it to JSON in Laravel (PHP)?
我有以下代码下载 .csv 文件。 这工作正常。
public function csv(Export $export)
{
$buffer = $export->getCsvData_();
return response()->streamDownload(
function () use ($buffer) {
$file = fopen('php://output', 'w');
fputs($file, $buffer);
fclose($file);
},
"$export->filename.$export->file_extension",
[
"Content-type" => "text/csv",
"Content-Disposition" => "attachment; filename=$export->filename.$export->file_extension",
"Pragma" => "no-cache",
"Cache-Control" => "must-revalidate, post-check=0, pre-check=0",
"Expires" => "0"
]
);
}
我需要读取这个 .csv 缓冲区并将 CSV 文件转换为 JSON 文件并将其下载为 JSON 文件。 所以首先,我尝试将 .csv 转换为 JSON 对象,如下所示:
public function json(Export $export)
{
$buffer = $export->getCsvData_();
$file = response()->streamDownload(
function () use ($buffer) {
$file = fopen('php://output', 'w');
fputs($file, $buffer);
fclose($file);
},
"$export->filename.csv",
[
"Content-type" => "text/csv",
"Content-Disposition" => "attachment; filename=$export->filename.csv",
"Pragma" => "no-cache",
"Cache-Control" => "must-revalidate, post-check=0, pre-check=0",
"Expires" => "0"
]
);
$csv = file_get_contents($file);
print_r($file);
$array = array_map("str_getcsv", explode("\n", $csv));
$json = json_encode($array);
print_r($json);
}
我将 CSV 带到 $file 并使用 file_get_content 和其他 PHP 函数。 但是 'print_r($json);' 给我一个 NULL 值。
如何解决这个问题? 有没有更好的方法以JSON格式下载生成的CSV?
先感谢您。
试一试吧
public function json(Export $export)
{
$buffer = $export->getCsvData_();
$file = response()->streamDownload(
function () use ($buffer) {
$file = fopen('php://output', 'w');
fputs($file, $buffer);
fclose($file);
},
"$export->filename.csv",
[
"Content-type" => "text/csv",
"Content-Disposition" => "attachment; filename=$export->filename.csv",
"Pragma" => "no-cache",
"Cache-Control" => "must-revalidate, post-check=0, pre-check=0",
"Expires" => "0"
]
);
//$file is the csv file URL
$CSV_Data_Array = [];
$file_handle = fopen($file, 'r');
while (!feof($file_handle) ) {
$CSV_Data_Array[] = fgetcsv($file_handle);
}
fclose($file_handle);
//$csv = file_get_contents($file);
print_r($CSV_Data_Array);
//$array = array_map("str_getcsv", explode("\n", $csv));
$json = json_encode($array);
print_r($json);
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.