archived-doc-pt-br/reference/array/functions/array-intersect-ukey.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.array-intersect-ukey">
 <refnamediv>
  <refname>array_intersect_ukey</refname>
  <refpurpose>Computa a interseção de arrays usando uma função de retorno nas chaves para comparação</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>array_intersect_ukey</methodname>
   <methodparam><type>array</type><parameter>array</parameter></methodparam>
   <methodparam rep="repeat"><type>array</type><parameter>arrays</parameter></methodparam>
   <methodparam><type>callable</type><parameter>key_compare_func</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>array_intersect_ukey</function> retorna um array
   contendo todos os valores de <parameter>array</parameter>
   que têm as mesmas chaves presentes em todos os argumentos.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>array</parameter></term>
     <listitem>
      <para>
       Array inicial para comparação dos arrays.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>arrays</parameter></term>
     <listitem>
      <para>
       Arrays para comparar as chaves.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>key_compare_func</parameter></term>
     <listitem>
      &sort.callback.description;
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Retorna os valores de <parameter>array</parameter> cujas chaves existem
   em todos os argumentos.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Exemplo da função <function>array_intersect_ukey</function></title>
    <programlisting role="php">
<![CDATA[
<?php
function key_compare_func($key1, $key2)
{
    if ($key1 == $key2)
        return 0;
    else if ($key1 > $key2)
        return 1;
    else
        return -1;
}

$array1 = array('azul'  => 1, 'vermelho' => 2, 'verde'   => 3, 'roxo'  => 4);
$array2 = array('verde' => 5, 'azul'     => 6, 'amarelo' => 7, 'rosa'  => 8);

var_dump(array_intersect_ukey($array1, $array2, 'key_compare_func'));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
array(2) {
  ["azul"]=>
  int(1)
  ["verde"]=>
  int(3)
}
]]>
    </screen>
   </example>
  </para>
  <para>
   Em nosso exemplo, é possível ver que somente as chaves <literal>'azul'</literal>
   e <literal>'verde'</literal> estão presentes em ambos os arrays e assim
   retornadas. Observe também que os valores para as chaves
   <literal>'azul'</literal> e <literal>'verde'</literal> diferem entre os
   dois arrays. Uma combinação ainda ocorre porque somente as chaves são
   verificadas. Os valores retornados são os do <parameter>array</parameter>.
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>array_diff</function></member>
    <member><function>array_udiff</function></member>
    <member><function>array_diff_assoc</function></member>
    <member><function>array_diff_uassoc</function></member>
    <member><function>array_udiff_assoc</function></member>
    <member><function>array_udiff_uassoc</function></member>
    <member><function>array_diff_key</function></member>
    <member><function>array_diff_ukey</function></member>
    <member><function>array_intersect</function></member>
    <member><function>array_intersect_assoc</function></member>
    <member><function>array_intersect_uassoc</function></member>
    <member><function>array_intersect_key</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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