mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-19 18:38:55 +00:00
8f48b5ad75
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@329171 c90b9560-bf6c-de11-be94-00142212c4b1
262 lines
7.2 KiB
XML
262 lines
7.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!-- $Revision$ -->
|
|
<refentry xml:id="function.array-udiff" xmlns="http://docbook.org/ns/docbook">
|
|
<refnamediv>
|
|
<refname>array_udiff</refname>
|
|
<refpurpose>Computes the difference of arrays by using a callback function for data comparison</refpurpose>
|
|
</refnamediv>
|
|
<refsect1 role="description">
|
|
&reftitle.description;
|
|
<methodsynopsis>
|
|
<type>array</type><methodname>array_udiff</methodname>
|
|
<methodparam><type>array</type><parameter>array1</parameter></methodparam>
|
|
<methodparam><type>array</type><parameter>array2</parameter></methodparam>
|
|
<methodparam choice="opt"><type>array</type><parameter> ...</parameter></methodparam>
|
|
<methodparam><type>callable</type><parameter>data_compare_func</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<para>
|
|
Computes the difference of arrays by using a callback function for data
|
|
comparison. This is unlike <function>array_diff</function> which uses an
|
|
internal function for comparing the data.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 role="parameters">
|
|
&reftitle.parameters;
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>array1</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The first array.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>array2</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The second array.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>data_compare_func</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The callback comparison function.
|
|
</para>
|
|
<para>
|
|
&return.callbacksort;
|
|
</para>
|
|
&callback.cmp;
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 role="returnvalues">
|
|
&reftitle.returnvalues;
|
|
<para>
|
|
Returns an array containing all the values of <parameter>array1</parameter>
|
|
that are not present in any of the other arguments.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 role="examples">
|
|
&reftitle.examples;
|
|
<para>
|
|
<example>
|
|
<title><function>array_udiff</function> example using stdClass Objects</title>
|
|
<programlisting role="php">
|
|
<![CDATA[
|
|
<?php
|
|
// Arrays to compare
|
|
$array1 = array(new stdclass, new stdclass,
|
|
new stdclass, new stdclass,
|
|
);
|
|
|
|
$array2 = array(
|
|
new stdclass, new stdclass,
|
|
);
|
|
|
|
// Set some properties for each object
|
|
$array1[0]->width = 11; $array1[0]->height = 3;
|
|
$array1[1]->width = 7; $array1[1]->height = 1;
|
|
$array1[2]->width = 2; $array1[2]->height = 9;
|
|
$array1[3]->width = 5; $array1[3]->height = 7;
|
|
|
|
$array2[0]->width = 7; $array2[0]->height = 5;
|
|
$array2[1]->width = 9; $array2[1]->height = 2;
|
|
|
|
function compare_by_area($a, $b) {
|
|
$areaA = $a->width * $a->height;
|
|
$areaB = $b->width * $b->height;
|
|
|
|
if ($areaA < $areaB) {
|
|
return -1;
|
|
} elseif ($areaA > $areaB) {
|
|
return 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
print_r(array_udiff($array1, $array2, 'compare_by_area'));
|
|
?>
|
|
]]>
|
|
</programlisting>
|
|
&example.outputs;
|
|
<screen>
|
|
<![CDATA[
|
|
Array
|
|
(
|
|
[0] => stdClass Object
|
|
(
|
|
[width] => 11
|
|
[height] => 3
|
|
)
|
|
|
|
[1] => stdClass Object
|
|
(
|
|
[width] => 7
|
|
[height] => 1
|
|
)
|
|
|
|
)
|
|
]]>
|
|
</screen>
|
|
</example>
|
|
</para>
|
|
<para>
|
|
<example>
|
|
<title><function>array_udiff</function> example using DateTime Objects</title>
|
|
<programlisting role="php">
|
|
<![CDATA[
|
|
<?php
|
|
Class MyCalendar {
|
|
public $free = array();
|
|
public $booked = array();
|
|
|
|
public function __construct($week = 'now') {
|
|
$start = new DateTime($week);
|
|
$start->modify('Monday this week midnight');
|
|
$end = clone $start;
|
|
$end->modify('Friday this week midnight');
|
|
$interval = new DateInterval('P1D');
|
|
foreach (new DatePeriod($start, $interval, $end) as $freeTime) {
|
|
$this->free[] = $freeTime;
|
|
}
|
|
}
|
|
|
|
public function bookAppointment(DateTime $date, $note) {
|
|
$this->booked[] = array('date' => $date->modify('midnight'), 'note' => $note);
|
|
}
|
|
|
|
public function checkAvailability() {
|
|
return array_udiff($this->free, $this->booked, array($this, 'customCompare'));
|
|
}
|
|
|
|
public function customCompare($free, $booked) {
|
|
if (is_array($free)) $a = $free['date'];
|
|
else $a = $free;
|
|
if (is_array($booked)) $b = $booked['date'];
|
|
else $b = $booked;
|
|
if ($a == $b) {
|
|
return 0;
|
|
} elseif ($a > $b) {
|
|
return 1;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Create a calendar for weekly appointments
|
|
$myCalendar = new MyCalendar;
|
|
|
|
// Book some appointments for this week
|
|
$myCalendar->bookAppointment(new DateTime('Monday this week'), "Cleaning GoogleGuy's apartment.");
|
|
$myCalendar->bookAppointment(new DateTime('Wednesday this week'), "Going on a snowboarding trip.");
|
|
$myCalendar->bookAppointment(new DateTime('Friday this week'), "Fixing buggy code.");
|
|
|
|
// Check availability of days by comparing $booked dates against $free dates
|
|
echo "I'm available on the following days this week...\n\n";
|
|
foreach ($myCalendar->checkAvailability() as $free) {
|
|
echo $free->format('l'), "\n";
|
|
}
|
|
echo "\n\n";
|
|
echo "I'm busy on the following days this week...\n\n";
|
|
foreach ($myCalendar->booked as $booked) {
|
|
echo $booked['date']->format('l'), ": ", $booked['note'], "\n";
|
|
}
|
|
?>
|
|
]]>
|
|
</programlisting>
|
|
&example.outputs;
|
|
<screen>
|
|
<![CDATA[
|
|
I'm available on the following days this week...
|
|
|
|
Tuesday
|
|
Thursday
|
|
|
|
|
|
I'm busy on the following days this week...
|
|
|
|
Monday: Cleaning GoogleGuy's apartment.
|
|
Wednesday: Going on a snowboarding trip.
|
|
Friday: Fixing buggy code.
|
|
]]>
|
|
</screen>
|
|
</example>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 role="notes">
|
|
&reftitle.notes;
|
|
<note>
|
|
<simpara>
|
|
Please note that this function only checks one dimension of a n-dimensional
|
|
array. Of course you can check deeper dimensions by using
|
|
<literal>array_udiff($array1[0], $array2[0], "data_compare_func");</literal>.
|
|
</simpara>
|
|
</note>
|
|
</refsect1>
|
|
<refsect1 role="seealso">
|
|
&reftitle.seealso;
|
|
<para>
|
|
<simplelist>
|
|
<member><function>array_diff</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_intersect</function></member>
|
|
<member><function>array_intersect_assoc</function></member>
|
|
<member><function>array_uintersect</function></member>
|
|
<member><function>array_uintersect_assoc</function></member>
|
|
<member><function>array_uintersect_uassoc</function></member>
|
|
</simplelist>
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|