function upload_file($file_url) {
if ( ! filter_var($file_url, FILTER_VALIDATE_URL) ) return false;
$get = wp_remote_get( $file_url );
if ( ! is_wp_error( $get ) ) {
// check mime type if you want
// $mime_type = wp_remote_retrieve_header( $get, 'content-type' );
return wp_upload_bits( basename($file_url), '', wp_remote_retrieve_body( $get ) );
}
return false;
}
// use it like
upload_file('http://www.site.com/path/myfile.json');
For what is returned see wp_upload_bits in codex.
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