filter.constants.html

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   <span class="term">
    <b><tt>FILTER_SANITIZE_EMAIL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     ID of &quot;email&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_SANITIZE_URL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     ID of &quot;url&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_SANITIZE_NUMBER_INT</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     ID of &quot;number_int&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_SANITIZE_NUMBER_FLOAT</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     ID of &quot;number_float&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_SANITIZE_MAGIC_QUOTES</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     ID of &quot;magic_quotes&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_CALLBACK</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     ID of &quot;callback&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ALLOW_OCTAL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow octal notation (<i>0[0-7]+</i>) in &quot;int&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ALLOW_HEX</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow hex notation (<i>0x[0-9a-fA-F]+</i>) in &quot;int&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_STRIP_LOW</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Strip characters with ASCII value less than 32.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_STRIP_HIGH</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Strip characters with ASCII value greater than 127.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ENCODE_LOW</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Encode characters with ASCII value less than 32.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ENCODE_HIGH</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Encode characters with ASCII value greater than 127.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ENCODE_AMP</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Encode <i>&amp;</i>.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_NO_ENCODE_QUOTES</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Don&#039;t encode <i>&#039;</i> and <i>&quot;</i>.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_EMPTY_STRING_NULL</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     (No use for now.)
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ALLOW_FRACTION</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow fractional part in &quot;number_float&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ALLOW_THOUSAND</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow thousand separator (<i>,</i>) in &quot;number_float&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_ALLOW_SCIENTIFIC</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow scientific notation (<i>e</i>, <i>E</i>) in
     &quot;number_float&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_SCHEME_REQUIRED</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Require scheme in &quot;validate_url&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_HOST_REQUIRED</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Require host in &quot;validate_url&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_PATH_REQUIRED</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Require path in &quot;validate_url&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_QUERY_REQUIRED</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Require query in &quot;validate_url&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_IPV4</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow only IPv4 address in &quot;validate_ip&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_IPV6</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Allow only IPv6 address in &quot;validate_ip&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_NO_RES_RANGE</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Deny reserved addresses in &quot;validate_ip&quot; filter.
    </span>
   </dd>

  </dt>

  <dt>

   <span class="term">
    <b><tt>FILTER_FLAG_NO_PRIV_RANGE</tt></b>
     (<a href="language.types.integer.html" class="type integer">integer</a>)
   </span>

   <dd>

    <span class="simpara">
     Deny private addresses in &quot;validate_ip&quot; filter.
    </span>
   </dd>

  </dt>

 </dl>

</div>
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