我只是写信给你，因为我正在努力让这段代码工作.我能够调用API的要求从命令行.只要我尝试调用它从一个php函数后，转换为PHP可读的curl它似乎发送，但我只是得到一个空数组作为响应。这是相当混乱，因为我得到了有效的错误消息，在响应从API以前。我将列出php和html表单的代码。

<?php

$name = $_POST['testName'];
$email = $_POST['testEmail'];
$file = $_FILES['testFile'];
$url = $_POST['testURL'];

runSend($file, $name, $email);

function runSend($file, $name, $email){

echo "Success, message sent";
        
echo $file;
echo $name;
echo $email;
echo $url;
        
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://api.boldsign.com/v1/document/send');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
$post = array(
    'Title' => 'Commercial Agreement',
    'Message' => 'Terms, purpose and duration of agreement ',
    'UseTextTags' => 'true',
    'EnableSigningOrder' => 'false',
    'Signers[0][Name]' => 'Example Name',
    'Signers[0][EmailAddress]' => 'example@example.com.au',
    'Signers[0][SignerOrder]' => '0',
    'Signers[0][FormFields][0][FieldType]' => 'Signature',
    'Signers[0][FormFields][0][Name]' => 'sign_field',
    'Signers[0][FormFields][0][PageNumber]' => '1',
    'Signers[0][FormFields][0][Bounds][X]' => '50',
    'Signers[0][FormFields][0][Bounds][Y]' => '50',
    'Signers[0][FormFields][0][Bounds][Width]' => '200',
    'Signers[0][FormFields][0][Bounds][Height]' => '30',
    'Signers[0][FormFields][0][IsRequired]' => 'true',
    'Files' => new CURLFILE($file)
);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

$headers = array();
$headers[] = 'X-Api-Key: EXAM76242$PLEA32PIK555EY';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);

<form action="/wp-content/themes/hello-theme-child-master/send-test-file.php" method="post" enctype="multipart/form-data">
        name:
            <input type="text" id="testName" name="testName" value="[7401]"><br>
        email
            <input type="text" id="testEmail" name="testEmail" value="testEmail"><br>
        Select pdf to upload:
            <input type="file" name="testFile" id="testFile">
<input type="text" id="testURL" name="testURL" value="[e2pdf-download id="31" output='url']"><br>
            <input type="submit" value="Send File" name="submit">
    </form>

我已经尝试过无数次重构代码，坦率地说，我被难倒了。
----------------编辑/更新-----------------------------------------
你好，谢谢你.在你的帮助下，我越来越接近.下面是我目前的代码和错误，我得到.如果有人可以再看看，看看他们是否能想到任何可能的原因.再次感谢！

<?php

    if ($_FILES['testFile']['error'] !== UPLOAD_ERR_OK) {
        die("File upload failed with error code " . $_FILES['testFile']['error']);
    }

    //$name = $_POST['testName'];
    //$email = $_POST['testEmail'];
    //$url = $_POST['testURL'];
    //fopen($_FILES["UploadFileName"]["tmp_name"], 'r');
    $file = $_FILES['testFile'];

    runSend($file);

    /*
    $location = "/uploads/test/"_.$_FILENAME['testFile']['name']_;
    $tmp_file = $_FILES['testFile']['tmp_name'];
    move_uploaded_file($tmp_file, $location);
    */

    function runSend($file){

        $ch = curl_init();

        
        curl_setopt($ch, CURLOPT_URL, 'https://api.boldsign.com/v1/document/send');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        $post = array(
            'DisableExpiryAlert' => 'false',
            'ReminderSettings.ReminderDays' => '5',
            'BrandId' => '',
            'ReminderSettings.ReminderCount' => '3',
            'EnableReassign' => 'false',
            'Message' => '',
            'Signers[0][Name]' => 'Enter Name',
            'Signers[0][EmailAddress]' => 'example@example.com.au',
            'Signers[0][SignerOrder]' => '0',
            'Signers[0][FormFields][0][FieldType]' => 'Signature',
            'Signers[0][FormFields][0][Name]' => 'sign_field',
            'Signers[0][FormFields][0][PageNumber]' => '1',
            'Signers[0][FormFields][0][Bounds][X]' => '50',
            'Signers[0][FormFields][0][Bounds][Y]' => '50',
            'Signers[0][FormFields][0][Bounds][Width]' => '200',
            'Signers[0][FormFields][0][Bounds][Height]' => '30',
            'Signers[0][FormFields][0][IsRequired]' => 'true',
            'ExpiryDays' => '30',
            'EnablePrintAndSign' => 'false',
            'AutoDetectFields' => 'false',
            'OnBehalfOf' => '',
            'EnableSigningOrder' => 'false',
            'UseTextTags' => 'true',
            'SendLinkValidTill' => '',
            'Files' => new CURLFILE($file['tmp_name'].'.pdf'),
            'Title' => 'testing',
            'HideDocumentId' => 'false',
            'EnableEmbeddedSigning' => 'false',
            'ExpiryDateType' => 'Days',
            'ReminderSettings.EnableAutoReminder' => 'true',
            'ExpiryValue' => '60',
            'DisableEmails' => 'false'
        );
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

        $headers = array();
        $headers[] = 'Accept: application/json';
        $headers[] = 'X-API-Key: GWAGsagsgaEAWT2545q3AF';
        $headers[] = 'Content-Type: multipart/form-data';
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

        $result = curl_exec($ch);
        
        echo $result;
        
        $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        echo $httpcode;
        
        if (curl_errno($ch)) {
            echo 'Error:' . curl_error($ch);
        }
        curl_close($ch);

    };
?>

我目前收到的错误消息：0错误：无法打开文件“/tmp/phpWQLlLP.pdf”