[英]How to read CSV file buffer and convert it to JSON in Laravel (PHP)?
我有以下代碼下載 .csv 文件。 這工作正常。
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"
]
);
}
我需要讀取這個 .csv 緩沖區並將 CSV 文件轉換為 JSON 文件並將其下載為 JSON 文件。 所以首先,我嘗試將 .csv 轉換為 JSON 對象,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);
}
我將 CSV 帶到 $file 並使用 file_get_content 和其他 PHP 函數。 但是 'print_r($json);' 給我一個 NULL 值。
如何解決這個問題? 有沒有更好的方法以JSON格式下載生成的CSV?
先感謝您。
試一試吧
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);
}
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