Convert all or part of a YAML document stream to a PHP variable.
The string to parse as a YAML document stream.
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 details.
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 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.