How Should I Format CURLOPT_POSTFIELDS Data for Different Data Types in cURL?

CURLOpt Aware Post Field Configuration Requirements

When utilizing curl's POST feature with CURLOPT_POSTFIELDS, format considerations depend on data type.

For strings, applying urlencode() is necessary. However, if the data parameter is an array, key-value pairs are required. In such cases, curl automatically assigns the Content-type header to "multipart/form-data."

It's important to note that external functions are not necessary to construct query strings from arrays; the convenient http_build_query() function can be leveraged as demonstrated below:

$query = http_build_query($data, '', '&');

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