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		<title>PHP/Data Structure/usort - История изменений</title>
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		<updated>2026-04-05T03:31:30Z</updated>
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		<id>http://wbex.ru/index.php?title=PHP/Data_Structure/usort&amp;diff=274&amp;oldid=prev</id>
		<title> в 10:37, 26 мая 2010</title>
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				<updated>2010-05-26T10:37:25Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 10:37, 26 мая 2010&lt;/td&gt;
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	<entry>
		<id>http://wbex.ru/index.php?title=PHP/Data_Structure/usort&amp;diff=275&amp;oldid=prev</id>
		<title>Admin: 1 версия</title>
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				<updated>2010-05-26T07:02:56Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==Sorting an Array Using Comparison Functions==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;html4strict&amp;quot;&amp;gt;&lt;br /&gt;
 &lt;br /&gt;
&amp;lt;?php&lt;br /&gt;
  function evenfirst($i, $j)&lt;br /&gt;
  {&lt;br /&gt;
    $value = 0;&lt;br /&gt;
    if($i % 2)$value++;&lt;br /&gt;
    if($j % 2)$value--;&lt;br /&gt;
    if($value == 0)&lt;br /&gt;
      $value = $i &amp;lt; $j;&lt;br /&gt;
    return $value;&lt;br /&gt;
  }&lt;br /&gt;
  $clothes = array( &amp;quot;hats&amp;quot; =&amp;gt; 75, &amp;quot;coats&amp;quot; =&amp;gt; 32, &amp;quot;shoes&amp;quot; =&amp;gt; 102,&lt;br /&gt;
                    &amp;quot;gloves&amp;quot; =&amp;gt; 15, &amp;quot;shirts&amp;quot; =&amp;gt; 51, &amp;quot;trousers&amp;quot; =&amp;gt; 44);&lt;br /&gt;
  usort($clothes, &amp;quot;evenfirst&amp;quot;);&lt;br /&gt;
  var_export($clothes);&lt;br /&gt;
?&amp;gt;&lt;br /&gt;
  &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==usort() sorts an array based on your own predefined criteria.==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;html4strict&amp;quot;&amp;gt;&lt;br /&gt;
 &lt;br /&gt;
Its syntax is: void usort(array array, string function_name)&lt;br /&gt;
&amp;lt;?&lt;br /&gt;
    $vocab = array(&amp;quot;S123&amp;quot;,&amp;quot;A1234&amp;quot;, &amp;quot;P12345&amp;quot;, &amp;quot;A1234567&amp;quot;,&amp;quot;T&amp;quot;);&lt;br /&gt;
    &lt;br /&gt;
    function compare_length($str1, $str2) {&lt;br /&gt;
         $length1 = strlen($str1);&lt;br /&gt;
         $length2 = strlen($str2);&lt;br /&gt;
    &lt;br /&gt;
         if ($length1 == $length2) :&lt;br /&gt;
              return 0;&lt;br /&gt;
         elseif ($length1 &amp;lt; $length2) :&lt;br /&gt;
              return -1;&lt;br /&gt;
         else :&lt;br /&gt;
              return 1;&lt;br /&gt;
         endif;&lt;br /&gt;
    }&lt;br /&gt;
    usort($vocab, &amp;quot;compare_length&amp;quot;);&lt;br /&gt;
    &lt;br /&gt;
    while (list ($key, $val) = each ($vocab)) {&lt;br /&gt;
         echo &amp;quot;$val&amp;lt;br&amp;gt;&amp;quot;;&lt;br /&gt;
    }&lt;br /&gt;
?&amp;gt;&lt;br /&gt;
  &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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