I was wondering if it is possible to post a file - along with other form data - when the file is just a string?
I know that you can post a file that is already on the filesystem by prefixing the filepath with "@".
However I'd like to bypass creating a temporary file and send just the file as a string, but I am unsure how to construct the request using cURL in PHP.
Cheers
$postFields = array(
'otherFields' => 'Yes'
,'filename' => 'my_file.csv'
,'data' => 'comma seperated content'
);
$options = array(
CURLOPT_RETURNTRANSFER => true
,CURLOPT_SSL_VERIFYPEER => false
,CURLOPT_SSL_VERIFYHOST => 1
,CURLOPT_POSTFIELDS => $postFields
,CURLOPT_HTTPHEADER => array(
'Content-type: multipart/form-data'
)
);
Source: Tips4all
Should be possible: here's a form, posted through a browser (irrelevant fields omitted):
ReplyDeletePOST http://host.example.com/somewhere HTTP/1.1
Content-Type: multipart/form-data; boundary=---------------------------7da16b2e4026c
Content-Length: 105732
-----------------------------7da16b2e4026c
Content-Disposition: form-data; name="NewFile"; filename="test.jpg"
Content-Type: image/jpeg
(...raw JPEG data here...)
-----------------------------7da16b2e4026c
Content-Disposition: form-data; name="otherformfield"
content of otherformfield is this text
-----------------------------7da16b2e4026c--
So, if we build the POST body ourselves and set an extra header or two, we should be able to simulate this:
// form field separator
$delimiter = '-------------' . uniqid();
// file upload fields: name => array(type=>'mime/type',content=>'raw data')
$fileFields = array(
'file1' => array(
'type' => 'text/plain',
'content' => '...your raw file content goes here...'
), /* ... */
);
// all other fields (not file upload): name => value
$postFields = array(
'otherformfield' => 'content of otherformfield is this text',
/* ... */
);
$data = '';
// populate normal fields first (simpler)
foreach ($postFields as $name => $content) {
$data .= $delimiter . "\r\n"
$data .= 'Content-Disposition: form-data; name="' . $name . '"';
// note: double endline
$data .= "\r\n\r\n";
}
// populate file fields
foreach ($fileFields as $name => $file) {
$data .= "--" . $delimiter . "\r\n"
// "filename" attribute is not essential; server-side scripts may use it
$data .= 'Content-Disposition: form-data; name="' . $name . '";' .
' filename="' . $name . '"' . "\r\n";
// this is, again, informative only; good practice to include though
$data .= 'Content-Type: ' . $file['type'] . "\r\n";
// this endline must be here to indicate end of headers
$data .= "\r\n";
// the file itself (note: there's no encoding of any kind)
$data .= $file['content'] . "\r\n";
}
// last delimiter
$data .= "--" . $delimiter . "--\r\n";
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_POST, true);
curl_setopt($handle, CURLOPT_HTTPHEADER => array(
'Content-Type: multipart/form-data; boundary=' . $delimiter,
'Content-Length: ' . strlen($data);
);
curl_setopt($handle, CURLOPT_POSTFIELDS, $data);
curl_exec($handle);
This way, we're doing all the heavy lifting ourselves, and trusting cURL not to mangle it.
php has access to a temporary location "php://memory", which actually makes what you're trying to do fairly easy.
ReplyDelete$fh = fopen('php://memory','rw');
fwrite( $fh, $content);
rewind($fh);
$options = array(
CURLOPT_RETURNTRANSFER => true
,CURLOPT_SSL_VERIFYPEER => false
,CURLOPT_SSL_VERIFYHOST => 1
,CURLOPT_HTTPHEADER => array(
'Content-type: multipart/form-data'
)
,CURLOPT_INFILE => $fh
,CURLOPT_INFILESIZE => strlen($content)
);