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<refentry xml:id="function.array-count-values" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>array_count_values</refname>
  <refpurpose>Counts all the values of an array</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>array_count_values</methodname>
   <methodparam><type>array</type><parameter>input</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>array_count_values</function> returns an array using
   the values of the <parameter>input</parameter> array as keys and
   their frequency in <parameter>input</parameter> as values.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>

    <varlistentry>
     <term><parameter>input</parameter></term>
     <listitem>
      <para>
       The array of values to count
      </para>
     </listitem>
    </varlistentry>

   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns an associative array of values from <parameter>input</parameter> as
   keys and their count as value.
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   Throws <constant>E_WARNING</constant> for every element which is not
   <type>string</type> or <type>integer</type>.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>array_count_values</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$array = array(1, "hello", 1, "world", "hello");
print_r(array_count_values($array));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Array
(
    [1] => 2
    [hello] => 2
    [world] => 1
)
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>count</function></member>
    <member><function>array_unique</function></member>
    <member><function>array_values</function></member>
    <member><function>count_chars</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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