archived-doc-zh/reference/array/functions/array-combine.xml

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<refentry xml:id="function.array-combine" xmlns="http://docbook.org/ns/docbook">
   <refnamediv>
    <refname>array_combine</refname>
    <refpurpose>
     创建一个数组，用一个数组的值作为其键名，另一个数组的值作为其值
    </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>
     返回一个 <type>array</type>，用来自
     <parameter>keys</parameter> 数组的值作为键名，来自
     <parameter>values</parameter> 数组的值作为相应的值。
    </para>
    <para>
     如果两个数组的单元数不同或者数组为空时返回 &false;。
    </para>
    <para>
     <example>
      <title>简单的 <function>array_combine</function> 例子</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>
    <para>
     参见 <function>array_merge</function>，<function>array_walk</function>
     和 <function>array_values</function>。
    </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.
  </para>
 </refsect1>

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

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>5.4.0</entry>
       <entry>
        Previous versions issued <constant>E_WARNING</constant> and returned
        &false; for empty arrays.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </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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