Convert all or part of a YAML document stream read from a URL to a PHP variable.
url should be of the form "scheme://...". PHP will search for a protocol handler (also known as a wrapper) for that scheme. If no wrappers for that protocol are registered, PHP will emit a notice to help you track potential problems in your script and then continue as though filename specifies a regular file.
Document to extract from stream (-1 for all documents, 0 for first document, ...).
If ndocs is provided, then it is filled with the number of documents found in stream.
Content handlers for YAML nodes. Associative array of YAML tag => callable mappings. See parse callbacks for more
Returns the value encoded in input in appropriate PHP type or false on failure. If pos is -1 an array will be returned with one entry for each document found in the stream.
Processing untrusted user input with yaml_parse_url is dangerous if the use of unserialize is enabled for nodes using the !php/object tag. This behavior can be disabled by using the yaml.decode_php ini setting.