(PHP 7)
inflate_init — Initialize an incremental inflate context
$encoding
   [, array $options = array()
  ] ) : resource
    Initialize an incremental inflate context with the specified
    encoding.
  
encoding
      One of the ZLIB_ENCODING_* constants.
     
optionsAn associative array which may contain the following elements:
The compression level in range -1..9; defaults to -1.
The compression memory level in range 1..9; defaults to 8.
The zlib window size (logarithmic) in range 8..15; defaults to 15.
          One of ZLIB_FILTERED,
          ZLIB_HUFFMAN_ONLY, ZLIB_RLE,
          ZLIB_FIXED or
          ZLIB_DEFAULT_STRATEGY (the default).
         
A string or an array of strings of the preset dictionary (default: no preset dictionary).
   Returns an inflate context resource (zlib.inflate) on
   success,  o FALSE en caso de error.
  
   If an invalid encoding or option is passed to options,
   or the context couldn't be created, an error of level
   E_WARNING is generated.