来自单独功能的数据正在Excel中合并

Question

我正在处理2个json数据，我需要将数据传输到单独的excel文件中。我所做的是，我做了2个功能，以便可以选择要下载的文件。问题是当我尝试同时调用两者时，数据在单个excel中合并。我希望它将单独下载。

我尝试在第一个功能之后添加睡眠，但是没有用，仍然是相同的输出。在这两个功能之后，我也尝试使用die，但是只有第一个在工作。

希望你能帮助我。

示例代码

function.php

<?php

function bjpk(){
    $json = 'api link...';
    $arr = json_decode(file_get_contents($json), true);
    $name = $arr['code'];
    header("Content-Disposition: attachment; filename=\"$name.xls\"");
    header("Content-Type: application/vnd.ms-excel;");
    header("Pragma: no-cache");
    header("Expires: 0");
    $out = fopen("php://output", 'w');

    $data = array();

    foreach ($arr['data'] as $key => $value) {

    $data['date'] = substr($value['opentime'], 0, -9);
    $data['num'] = substr($value['expect'], 4);
    $codes = explode(',', $value['opencode']);

    foreach ($codes as $key => $code) {
        $data[$key] = $code;
    }

        fputcsv($out, $data,"\t");
    }


    fclose($out);
}

function cqssc(){
    $json = 'api link..';
    $arr = json_decode(file_get_contents($json), true);
    $name = $arr['code'];
    header("Content-Disposition: attachment; filename=\"$name.xls\"");
    header("Content-Type: application/vnd.ms-excel;");
    header("Pragma: no-cache");
    header("Expires: 0");
    $out = fopen("php://output", 'w');

    $data = array();

    foreach ($arr['data'] as $key => $value) {

    $date = DateTime::createFromFormat('Ymd', substr($value['expect'], 0, -3));

    $data['date'] = $date->format('Y-m-d');
    $data['num'] = substr($value['expect'], 8);
    $codes = explode(',', $value['opencode']);

    foreach ($codes as $key => $code) {
        $data[$key] = $code;
    }

        fputcsv($out, $data,"\t");
    }


    fclose($out);

}

index.php

<?php

require_once ('function.php');

bjpk();

cqssc();