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<title>Predefined Constants</title>
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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>
<p class="para">
</p>
<dl>
<strong class="title">Scalar entity styles usable by <span class="function"><a href="function.yaml-parse.html" class="function">yaml_parse()</a></span>
callback methods.</strong>
<dt id="constant.yaml-any-scalar-style">
<span class="term">
<strong><code>YAML_ANY_SCALAR_STYLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
</span>
</dd>
</dt>
<dt id="constant.yaml-plain-scalar-style">
<span class="term">
<strong><code>YAML_PLAIN_SCALAR_STYLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
</span>
</dd>
</dt>
<dt id="constant.yaml-single-quoted-scalar-style">
<span class="term">
<strong><code>YAML_SINGLE_QUOTED_SCALAR_STYLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
</span>
</dd>
</dt>
<dt id="constant.yaml-double-quoted-scalar-style">
<span class="term">
<strong><code>YAML_DOUBLE_QUOTED_SCALAR_STYLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
</span>
</dd>
</dt>
<dt id="constant.yaml-literal-scalar-style">
<span class="term">
<strong><code>YAML_LITERAL_SCALAR_STYLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
</span>
</dd>
</dt>
<dt id="constant.yaml-folded-scalar-style">
<span class="term">
<strong><code>YAML_FOLDED_SCALAR_STYLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
</span>
</dd>
</dt>
</dl>
<dl>
<strong class="title">Common tags usable by <span class="function"><a href="function.yaml-parse.html" class="function">yaml_parse()</a></span>
callback methods.</strong>
<dt id="constant.yaml-null-tag">
<span class="term">
<strong><code>YAML_NULL_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:null"
</span>
</dd>
</dt>
<dt id="constant.yaml-bool-tag">
<span class="term">
<strong><code>YAML_BOOL_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:bool"
</span>
</dd>
</dt>
<dt id="constant.yaml-str-tag">
<span class="term">
<strong><code>YAML_STR_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:str"
</span>
</dd>
</dt>
<dt id="constant.yaml-int-tag">
<span class="term">
<strong><code>YAML_INT_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:int"
</span>
</dd>
</dt>
<dt id="constant.yaml-float-tag">
<span class="term">
<strong><code>YAML_FLOAT_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:float"
</span>
</dd>
</dt>
<dt id="constant.yaml-timestamp-tag">
<span class="term">
<strong><code>YAML_TIMESTAMP_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:timestamp"
</span>
</dd>
</dt>
<dt id="constant.yaml-seq-tag">
<span class="term">
<strong><code>YAML_SEQ_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:seq"
</span>
</dd>
</dt>
<dt id="constant.yaml-map-tag">
<span class="term">
<strong><code>YAML_MAP_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"tag:yaml.org,2002:map"
</span>
</dd>
</dt>
<dt id="constant.yaml-php-tag">
<span class="term">
<strong><code>YAML_PHP_TAG</code></strong>
(<span class="type"><a href="language.types.string.html" class="type string">string</a></span>)
</span>
<dd>
<span class="simpara">
"!php/object"
</span>
</dd>
</dt>
</dl>
<dl>
<strong class="title">Encoding types for <span class="function"><a href="function.yaml-emit.html" class="function">yaml_emit()</a></span></strong>
<dt id="constant.yaml-any-encoding">
<span class="term">
<strong><code>YAML_ANY_ENCODING</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Let the emitter choose an encoding.
</span>
</dd>
</dt>
<dt id="constant.yaml-utf8-encoding">
<span class="term">
<strong><code>YAML_UTF8_ENCODING</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Encode as UTF8.
</span>
</dd>
</dt>
<dt id="constant.yaml-utf16le-encoding">
<span class="term">
<strong><code>YAML_UTF16LE_ENCODING</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Encode as UTF16LE.
</span>
</dd>
</dt>
<dt id="constant.yaml-utf16be-encoding">
<span class="term">
<strong><code>YAML_UTF16BE_ENCODING</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Encode as UTF16BE.
</span>
</dd>
</dt>
</dl>
<dl>
<strong class="title">Linebreak types for <span class="function"><a href="function.yaml-emit.html" class="function">yaml_emit()</a></span></strong>
<dt id="constant.yaml-any-break">
<span class="term">
<strong><code>YAML_ANY_BREAK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Let emitter choose linebreak character.
</span>
</dd>
</dt>
<dt id="constant.yaml-cr-break">
<span class="term">
<strong><code>YAML_CR_BREAK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Use <em>\r</em> as break character (Mac style).
</span>
</dd>
</dt>
<dt id="constant.yaml-ln-break">
<span class="term">
<strong><code>YAML_LN_BREAK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Use <em>\n</em> as break character (Unix style).
</span>
</dd>
</dt>
<dt id="constant.yaml-crln-break">
<span class="term">
<strong><code>YAML_CRLN_BREAK</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Use <em>\r\n</em> as break character (DOS style).
</span>
</dd>
</dt>
</dl>
</div>
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