The parameter block manipulation functions provide routines for locating, adding, and removing entries in a pblock data structure
pblock_findval returns the value for a given name in a pblock.
pblock_nvinsert adds a new name-value entry to a pblock.
pblock_remove removes a pblock entry by name from a pblock. The entry is not disposed. Use param_free to free the memory used by the entry.
param_free frees the memory for the given pblock entry.
pblock_pblock2str creates a new string containing all of the name-value pairs from a pblock in the form “name=value name=value.” This string can be useful for debugging.