mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-18 05:26:57 +08:00
180 lines
28 KiB
HTML
180 lines
28 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>用回调函数比较数据来计算数组的差集</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.array-udiff" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">array_udiff</h1>
|
|
<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">array_udiff</span> — <span class="dc-title">用回调函数比较数据来计算数组的差集</span></p>
|
|
|
|
</div>
|
|
<div class="refsect1 description" id="refsect1-function.array-udiff-description">
|
|
<h3 class="title">说明</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>array_udiff</strong></span>
|
|
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array1</code></span>
|
|
, <span class="methodparam"><span class="type">array</span> <code class="parameter">$array2</code></span>
|
|
[, <span class="methodparam"><span class="type">array</span> <code class="parameter">$...</code></span>
|
|
], <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$value_compare_func</code></span>
|
|
) : <span class="type">array</span></div>
|
|
|
|
<p class="para rdfs-comment">
|
|
使用回调函数比较数据，计算数组的不同之处。和 <span class="function"><a href="array_diff.html" class="function">array_diff()</a></span> 不同的是，前者使用内置函数进行数据比较。
|
|
</p>
|
|
</div>
|
|
|
|
<div class="refsect1 parameters" id="refsect1-function.array-udiff-parameters">
|
|
<h3 class="title">参数</h3>
|
|
<p class="para">
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">array1</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
第一个数组。
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">array2</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
第二个数组。
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">value_compare_func</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
回调对照函数。
|
|
</p>
|
|
<p class="para">
|
|
在第一个参数小于，等于或大于第二个参数时，该比较函数必须相应地返回一个小于，等于或大于 0 的整数。
|
|
</p>
|
|
<div class="methodsynopsis dc-description"><span class="methodname"><span class="replaceable">callback</span></span> ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$a</code></span>, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$b</code></span> ) : <span class="type">int</span></div>
|
|
|
|
</dd>
|
|
|
|
|
|
</dl>
|
|
|
|
</p>
|
|
</div>
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.array-udiff-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
返回 <code class="parameter">array1</code> 里没有出现在其他参数里的所有值。
|
|
</p>
|
|
</div>
|
|
|
|
<div class="refsect1 examples" id="refsect1-function.array-udiff-examples">
|
|
<h3 class="title">范例</h3>
|
|
<p class="para">
|
|
<div class="example" id="example-6072">
|
|
<p><strong>Example #1 <span class="function"><strong>array_udiff()</strong></span> 使用 stdClass 对象的例子</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Arrays to compare<br /></span><span style="color: #0000BB">$array1 </span><span style="color: #007700">= array(new </span><span style="color: #0000BB">stdclass</span><span style="color: #007700">, new </span><span style="color: #0000BB">stdclass</span><span style="color: #007700">,<br /> new </span><span style="color: #0000BB">stdclass</span><span style="color: #007700">, new </span><span style="color: #0000BB">stdclass</span><span style="color: #007700">,<br /> );<br /><br /></span><span style="color: #0000BB">$array2 </span><span style="color: #007700">= array(<br /> new </span><span style="color: #0000BB">stdclass</span><span style="color: #007700">, new </span><span style="color: #0000BB">stdclass</span><span style="color: #007700">,<br /> );<br /><br /></span><span style="color: #FF8000">// Set some properties for each object<br /></span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-></span><span style="color: #0000BB">width </span><span style="color: #007700">= </span><span style="color: #0000BB">11</span><span style="color: #007700">; </span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-></span><span style="color: #0000BB">height </span><span style="color: #007700">= </span><span style="color: #0000BB">3</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]-></span><span style="color: #0000BB">width </span><span style="color: #007700">= </span><span style="color: #0000BB">7</span><span style="color: #007700">; </span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]-></span><span style="color: #0000BB">height </span><span style="color: #007700">= </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]-></span><span style="color: #0000BB">width </span><span style="color: #007700">= </span><span style="color: #0000BB">2</span><span style="color: #007700">; </span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]-></span><span style="color: #0000BB">height </span><span style="color: #007700">= </span><span style="color: #0000BB">9</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">3</span><span style="color: #007700">]-></span><span style="color: #0000BB">width </span><span style="color: #007700">= </span><span style="color: #0000BB">5</span><span style="color: #007700">; </span><span style="color: #0000BB">$array1</span><span style="color: #007700">[</span><span style="color: #0000BB">3</span><span style="color: #007700">]-></span><span style="color: #0000BB">height </span><span style="color: #007700">= </span><span style="color: #0000BB">7</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$array2</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-></span><span style="color: #0000BB">width </span><span style="color: #007700">= </span><span style="color: #0000BB">7</span><span style="color: #007700">; </span><span style="color: #0000BB">$array2</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-></span><span style="color: #0000BB">height </span><span style="color: #007700">= </span><span style="color: #0000BB">5</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$array2</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]-></span><span style="color: #0000BB">width </span><span style="color: #007700">= </span><span style="color: #0000BB">9</span><span style="color: #007700">; </span><span style="color: #0000BB">$array2</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]-></span><span style="color: #0000BB">height </span><span style="color: #007700">= </span><span style="color: #0000BB">2</span><span style="color: #007700">;<br /><br />function </span><span style="color: #0000BB">compare_by_area</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">, </span><span style="color: #0000BB">$b</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$areaA </span><span style="color: #007700">= </span><span style="color: #0000BB">$a</span><span style="color: #007700">-></span><span style="color: #0000BB">width </span><span style="color: #007700">* </span><span style="color: #0000BB">$a</span><span style="color: #007700">-></span><span style="color: #0000BB">height</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$areaB </span><span style="color: #007700">= </span><span style="color: #0000BB">$b</span><span style="color: #007700">-></span><span style="color: #0000BB">width </span><span style="color: #007700">* </span><span style="color: #0000BB">$b</span><span style="color: #007700">-></span><span style="color: #0000BB">height</span><span style="color: #007700">;<br /> <br /> if (</span><span style="color: #0000BB">$areaA </span><span style="color: #007700">< </span><span style="color: #0000BB">$areaB</span><span style="color: #007700">) {<br /> return -</span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /> } elseif (</span><span style="color: #0000BB">$areaA </span><span style="color: #007700">> </span><span style="color: #0000BB">$areaB</span><span style="color: #007700">) {<br /> return </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /> } else {<br /> return </span><span style="color: #0000BB">0</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_udiff</span><span style="color: #007700">(</span><span style="color: #0000BB">$array1</span><span style="color: #007700">, </span><span style="color: #0000BB">$array2</span><span style="color: #007700">, </span><span style="color: #DD0000">'compare_by_area'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
<div class="example-contents"><p>以上例程会输出：</p></div>
|
|
<div class="example-contents screen">
|
|
<div class="cdata"><pre>
|
|
Array
|
|
(
|
|
[0] => stdClass Object
|
|
(
|
|
[width] => 11
|
|
[height] => 3
|
|
)
|
|
|
|
[1] => stdClass Object
|
|
(
|
|
[width] => 7
|
|
[height] => 1
|
|
)
|
|
|
|
)
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
</p>
|
|
<p class="para">
|
|
<div class="example" id="example-6073">
|
|
<p><strong>Example #2 <span class="function"><strong>array_udiff()</strong></span> 使用 DateTime 对象的例子</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyCalendar </span><span style="color: #007700">{<br /> public </span><span style="color: #0000BB">$free </span><span style="color: #007700">= array();<br /> public </span><span style="color: #0000BB">$booked </span><span style="color: #007700">= array();<br /><br /> public function </span><span style="color: #0000BB">__construct</span><span style="color: #007700">(</span><span style="color: #0000BB">$week </span><span style="color: #007700">= </span><span style="color: #DD0000">'now'</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$start </span><span style="color: #007700">= new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">(</span><span style="color: #0000BB">$week</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$start</span><span style="color: #007700">-></span><span style="color: #0000BB">modify</span><span style="color: #007700">(</span><span style="color: #DD0000">'Monday this week midnight'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$end </span><span style="color: #007700">= clone </span><span style="color: #0000BB">$start</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$end</span><span style="color: #007700">-></span><span style="color: #0000BB">modify</span><span style="color: #007700">(</span><span style="color: #DD0000">'Friday this week midnight'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$interval </span><span style="color: #007700">= new </span><span style="color: #0000BB">DateInterval</span><span style="color: #007700">(</span><span style="color: #DD0000">'P1D'</span><span style="color: #007700">);<br /> foreach (new </span><span style="color: #0000BB">DatePeriod</span><span style="color: #007700">(</span><span style="color: #0000BB">$start</span><span style="color: #007700">, </span><span style="color: #0000BB">$interval</span><span style="color: #007700">, </span><span style="color: #0000BB">$end</span><span style="color: #007700">) as </span><span style="color: #0000BB">$freeTime</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">free</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$freeTime</span><span style="color: #007700">;<br /> }<br /> }<br /><br /> public function </span><span style="color: #0000BB">bookAppointment</span><span style="color: #007700">(</span><span style="color: #0000BB">DateTime $date</span><span style="color: #007700">, </span><span style="color: #0000BB">$note</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">booked</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'date' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">modify</span><span style="color: #007700">(</span><span style="color: #DD0000">'midnight'</span><span style="color: #007700">), </span><span style="color: #DD0000">'note' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$note</span><span style="color: #007700">);<br /> }<br /><br /> public function </span><span style="color: #0000BB">checkAvailability</span><span style="color: #007700">() {<br /> return </span><span style="color: #0000BB">array_udiff</span><span style="color: #007700">(</span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">free</span><span style="color: #007700">, </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">booked</span><span style="color: #007700">, array(</span><span style="color: #0000BB">$this</span><span style="color: #007700">, </span><span style="color: #DD0000">'customCompare'</span><span style="color: #007700">));<br /> }<br /> <br /> public function </span><span style="color: #0000BB">customCompare</span><span style="color: #007700">(</span><span style="color: #0000BB">$free</span><span style="color: #007700">, </span><span style="color: #0000BB">$booked</span><span style="color: #007700">) {<br /> if (</span><span style="color: #0000BB">is_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$free</span><span style="color: #007700">)) </span><span style="color: #0000BB">$a </span><span style="color: #007700">= </span><span style="color: #0000BB">$free</span><span style="color: #007700">[</span><span style="color: #DD0000">'date'</span><span style="color: #007700">];<br /> else </span><span style="color: #0000BB">$a </span><span style="color: #007700">= </span><span style="color: #0000BB">$free</span><span style="color: #007700">;<br /> if (</span><span style="color: #0000BB">is_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$booked</span><span style="color: #007700">)) </span><span style="color: #0000BB">$b </span><span style="color: #007700">= </span><span style="color: #0000BB">$booked</span><span style="color: #007700">[</span><span style="color: #DD0000">'date'</span><span style="color: #007700">];<br /> else </span><span style="color: #0000BB">$b </span><span style="color: #007700">= </span><span style="color: #0000BB">$booked</span><span style="color: #007700">;<br /> if (</span><span style="color: #0000BB">$a </span><span style="color: #007700">== </span><span style="color: #0000BB">$b</span><span style="color: #007700">) {<br /> return </span><span style="color: #0000BB">0</span><span style="color: #007700">;<br /> } elseif (</span><span style="color: #0000BB">$a </span><span style="color: #007700">> </span><span style="color: #0000BB">$b</span><span style="color: #007700">) {<br /> return </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /> } else {<br /> return -</span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /> }<br /> }<br />}<br /><br /></span><span style="color: #FF8000">// Create a calendar for weekly appointments<br /></span><span style="color: #0000BB">$myCalendar </span><span style="color: #007700">= new </span><span style="color: #0000BB">MyCalendar</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Book some appointments for this week<br /></span><span style="color: #0000BB">$myCalendar</span><span style="color: #007700">-></span><span style="color: #0000BB">bookAppointment</span><span style="color: #007700">(new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">(</span><span style="color: #DD0000">'Monday this week'</span><span style="color: #007700">), </span><span style="color: #DD0000">"Cleaning GoogleGuy's apartment."</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$myCalendar</span><span style="color: #007700">-></span><span style="color: #0000BB">bookAppointment</span><span style="color: #007700">(new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">(</span><span style="color: #DD0000">'Wednesday this week'</span><span style="color: #007700">), </span><span style="color: #DD0000">"Going on a snowboarding trip."</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$myCalendar</span><span style="color: #007700">-></span><span style="color: #0000BB">bookAppointment</span><span style="color: #007700">(new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">(</span><span style="color: #DD0000">'Friday this week'</span><span style="color: #007700">), </span><span style="color: #DD0000">"Fixing buggy code."</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Check availability of days by comparing $booked dates against $free dates<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">"I'm available on the following days this week...\n\n"</span><span style="color: #007700">;<br />foreach (</span><span style="color: #0000BB">$myCalendar</span><span style="color: #007700">-></span><span style="color: #0000BB">checkAvailability</span><span style="color: #007700">() as </span><span style="color: #0000BB">$free</span><span style="color: #007700">) {<br /> echo </span><span style="color: #0000BB">$free</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'l'</span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">; <br />}<br />echo </span><span style="color: #DD0000">"\n\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">"I'm busy on the following days this week...\n\n"</span><span style="color: #007700">;<br />foreach (</span><span style="color: #0000BB">$myCalendar</span><span style="color: #007700">-></span><span style="color: #0000BB">booked </span><span style="color: #007700">as </span><span style="color: #0000BB">$booked</span><span style="color: #007700">) {<br /> echo </span><span style="color: #0000BB">$booked</span><span style="color: #007700">[</span><span style="color: #DD0000">'date'</span><span style="color: #007700">]-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'l'</span><span style="color: #007700">), </span><span style="color: #DD0000">": "</span><span style="color: #007700">, </span><span style="color: #0000BB">$booked</span><span style="color: #007700">[</span><span style="color: #DD0000">'note'</span><span style="color: #007700">], </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">; <br />}<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
<div class="example-contents"><p>以上例程会输出：</p></div>
|
|
<div class="example-contents screen">
|
|
<div class="cdata"><pre>
|
|
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.
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
</p>
|
|
</div>
|
|
|
|
<div class="refsect1 notes" id="refsect1-function.array-udiff-notes">
|
|
<h3 class="title">注释</h3>
|
|
<blockquote class="note"><p><strong class="note">Note</strong>:
|
|
<span class="simpara">
|
|
注意本函数只检查了多维数组中的一维。当然，可以用
|
|
<em>array_udiff($array1[0], $array2[0], "data_compare_func");</em>
|
|
来检查更深的维度。
|
|
</span>
|
|
</p></blockquote>
|
|
</div>
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.array-udiff-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member"><span class="function"><a href="array_diff.html" class="function" rel="rdfs-seeAlso">array_diff()</a> - 计算数组的差集</span></li>
|
|
<li class="member"><span class="function"><a href="array_diff_assoc.html" class="function" rel="rdfs-seeAlso">array_diff_assoc()</a> - 带索引检查计算数组的差集</span></li>
|
|
<li class="member"><span class="function"><a href="array_diff_uassoc.html" class="function" rel="rdfs-seeAlso">array_diff_uassoc()</a> - 用用户提供的回调函数做索引检查来计算数组的差集</span></li>
|
|
<li class="member"><span class="function"><a href="array_udiff_assoc.html" class="function" rel="rdfs-seeAlso">array_udiff_assoc()</a> - 带索引检查计算数组的差集，用回调函数比较数据</span></li>
|
|
<li class="member"><span class="function"><a href="array_udiff_uassoc.html" class="function" rel="rdfs-seeAlso">array_udiff_uassoc()</a> - 带索引检查计算数组的差集，用回调函数比较数据和索引</span></li>
|
|
<li class="member"><span class="function"><a href="array_intersect.html" class="function" rel="rdfs-seeAlso">array_intersect()</a> - 计算数组的交集</span></li>
|
|
<li class="member"><span class="function"><a href="array_intersect_assoc.html" class="function" rel="rdfs-seeAlso">array_intersect_assoc()</a> - 带索引检查计算数组的交集</span></li>
|
|
<li class="member"><span class="function"><a href="array_uintersect.html" class="function" rel="rdfs-seeAlso">array_uintersect()</a> - 计算数组的交集，用回调函数比较数据</span></li>
|
|
<li class="member"><span class="function"><a href="array_uintersect_assoc.html" class="function" rel="rdfs-seeAlso">array_uintersect_assoc()</a> - 带索引检查计算数组的交集，用回调函数比较数据</span></li>
|
|
<li class="member"><span class="function"><a href="array_uintersect_uassoc.html" class="function" rel="rdfs-seeAlso">array_uintersect_uassoc()</a> - 带索引检查计算数组的交集，用单独的回调函数比较数据和索引</span></li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
</div></div></div></body></html> |