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<refentry xml:id="function.mcrypt-enc-is-block-algorithm" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>mcrypt_enc_is_block_algorithm</refname>
  <refpurpose>Checks whether the algorithm of the opened mode is a block algorithm</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>mcrypt_enc_is_block_algorithm</methodname>
   <methodparam><type>resource</type><parameter>td</parameter></methodparam>
  </methodsynopsis>
  <para>
   Tells whether the algorithm of the opened mode is a block algorithm.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>td</parameter></term>
     <listitem>
      <para>
       The encryption descriptor.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns &true; if the algorithm is a block algorithm or &false; if it is
   a stream one.
  </para>
 </refsect1>
</refentry>

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