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<refentry xml:id="function.array-combine" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>array_combine</refname>
  <refpurpose>Creates an array by using one array for keys and another for its values</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>array_combine</methodname>
   <methodparam><type>array</type><parameter>keys</parameter></methodparam>
   <methodparam><type>array</type><parameter>values</parameter></methodparam>
  </methodsynopsis>
  <para>
   Creates an <type>array</type> by using the values from the
   <parameter>keys</parameter> array as keys and the values from the
   <parameter>values</parameter> array as the corresponding values.
  </para>
 </refsect1>

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

    <varlistentry>
     <term><parameter>keys</parameter></term>
     <listitem>
      <para>
       Array of keys to be used. Illegal values for key will be
       converted to <type>string</type>.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry>
     <term><parameter>values</parameter></term>
     <listitem>
      <para>
       Array of values to be used
      </para>
     </listitem>
    </varlistentry>

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

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the combined <type>array</type>, &false; if the number of elements
   for each array isn't equal or if the arrays are empty.
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   Throws <constant>E_WARNING</constant> if <parameter>keys</parameter> and
   <parameter>values</parameter> are either empty or the number of elements
   does not match.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>A simple <function>array_combine</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$a = array('green', 'red', 'yellow');
$b = array('avocado', 'apple', 'banana');
$c = array_combine($a, $b);

print_r($c);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Array
(
    [green]  => avocado
    [red]    => apple
    [yellow] => banana
)
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>array_merge</function></member>
    <member><function>array_walk</function></member>
    <member><function>array_values</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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