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Added Thomas's contribution, plus more details on array_flip.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@47561 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Damien Seguy 2001-05-16 08:36:08 +00:00
parent 0817840cb9
commit e4738deb2c
1 changed files with 27 additions and 4 deletions
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31
functions/array.xml
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@ -270,7 +270,20 @@ $even_arr = array_filter($array2, "even");
</funcprototype>
</funcsynopsis>
<para>
<function>Array_flip</function> returns an array in flip order.
<function>array_flip</function> returns an array in flip order,
i.e. keys from <parameter>trans</parameter> become values and
<parameter>trans</parameter>'s values become keys.
Note that <function>array_flip</function> works only with string
and integer values, and it will display an alert if it detects
invalid key or value (array, double, object, boolean).
</para>
<para>
If a value has several occurences, the latest key will be
used as its values, and all others will be lost.
</para>
<para>
<function>array_flip</function> returns <literal>FALSE</literal>
if it fails.
</para>
<para>
<example>
@ -281,6 +294,16 @@ $original = strtr ($str, $trans);
</programlisting>
</example>
</para>
<para>
<example>
<title><function>Array_flip</function> example : collision</title>
<programlisting role="php">
$trans = array ("a" => 1, "b" => 1, "c" => 2);
$trans = array_flip ($trans);
// now $trans is : array(1 => "b", 2 => "c");
</programlisting>
</example>
</para>
</refsect1>
</refentry>
@ -1011,9 +1034,9 @@ $result_keyed = array_reverse ($input, TRUE);
</example>
</para>
<para>
This makes <varname>$result</varname> have <literal>array
(array ("green", "red"), 4.0, "php")</literal>. But
<varname>$result2[0]</varname> is still
This makes both <varname>$result</varname> and <varname>$result_keyed</varname>
be <literal>array(array ("green", "red"), 4.0, "php")</literal>. But
<varname>$result_keyed[0]</varname> is still
<literal>"php"</literal>.
</para>
<note>