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<h1>Predefined Constants</h1>
<p class="simpara">
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
</p>
<dl>
<dt id="constant.force-gzip">
<strong><code>FORCE_GZIP</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
</span>
</dd>
<dt id="constant.force-deflate">
<strong><code>FORCE_DEFLATE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
</span>
</dd>
<dt id="constant.zlib-encoding-raw">
<strong><code>ZLIB_ENCODING_RAW</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
DEFLATE algorithm as per RFC 1951. Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-encoding-deflate">
<strong><code>ZLIB_ENCODING_DEFLATE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
ZLIB compression algorithm as per RFC 1950. Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-encoding-gzip">
<strong><code>ZLIB_ENCODING_GZIP</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
GZIP algorithm as per RFC 1952. Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-filtered">
<strong><code>ZLIB_FILTERED</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-huffman-only">
<strong><code>ZLIB_HUFFMAN_ONLY</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-fixed">
<strong><code>ZLIB_FIXED</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-rle">
<strong><code>ZLIB_RLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-default-strategy">
<strong><code>ZLIB_DEFAULT_STRATEGY</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-block">
<strong><code>ZLIB_BLOCK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-no-flush">
<strong><code>ZLIB_NO_FLUSH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-partial-flush">
<strong><code>ZLIB_PARTIAL_FLUSH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-sync-flush">
<strong><code>ZLIB_SYNC_FLUSH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-full-flush">
<strong><code>ZLIB_FULL_FLUSH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
<dt id="constant.zlib-finish">
<strong><code>ZLIB_FINISH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
Available as of PHP 7.0.0.
</span>
</dd>
</dl>
</div>
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