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deflate_init(PHP 7) deflate_init — Initialize an incremental deflate context Description
resource deflate_init
( int
$encoding
[, array $options = array()
] )
Initializes an incremental deflate context using the specified
Note that the window option here only sets the window size
of the algorithm, differently from the zlib filters where the same parameter
also sets the encoding to use; the encoding must be set with the
Limitation: there is currently no way to set the header information on a GZIP compressed stream, which are set as follows: GZIP signature (\x1f\x8B); compression method (\x08 == DEFLATE); 6 zero bytes; the operating system set to the current system (\x00 = Windows, \x03 = Unix, etc.) Parameters
Return Values
Returns a deflate context resource (zlib.deflate) on
success, or Errors/Exceptions
If an invalid option is passed to See Also
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