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	<title>Уроки PHP, Mootools, JavaScript, ActionScript, HTML, CSS &#187; кодировка</title>
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		<title>Нужно поменять кодировку utf-8 на windows-1251?</title>
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		<pubDate>Mon, 06 Oct 2008 07:01:48 +0000</pubDate>
		<dc:creator>proglammer</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[cp-1251]]></category>
		<category><![CDATA[utf8]]></category>
		<category><![CDATA[win-1251]]></category>
		<category><![CDATA[windows1251]]></category>
		<category><![CDATA[кодировка]]></category>
		<category><![CDATA[смена кодировки]]></category>

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		<description><![CDATA[Рано или поздно перед программистом встанет задача перекодировки текста из utf-8 на windows-1251 (или cp1251 в unix формате). На например, такая необходимость возникает когда нужно отправить письмо в windows-1251, а текста хранятся в utf-8. Можно использовать iconv. Например так: Листинг 1. Функция iconv(): &#60;? echo iconv&#40;&#34;utf-8&#34;, &#34;windows-1251&#34;, &#34;Пора переходить на cp-1251.&#34;&#41;; ?&#62; Если iconv не помогает, [...]]]></description>
			<content:encoded><![CDATA[<!-- google_ad_section_start --><p>Рано или поздно перед программистом встанет задача перекодировки текста из utf-8 на windows-1251 (или cp1251 в unix формате). На например, такая необходимость возникает когда нужно <a href="http://php.infoniac.ru/sendmail.html">отправить письмо</a> в windows-1251, а текста хранятся в utf-8.
</p>
<p><span id="more-31"></span></p>
<p>Можно использовать <strong>iconv</strong>. Например так:</p>
<p><strong>Листинг 1. Функция iconv():</strong></p>

<div class="wp_syntax"><div class="code"><pre class="php" style="font-family:monospace;"><span style="color: #000000; font-weight: bold;">&lt;?</span>
<span style="color: #b1b100;">echo</span> <span style="color: #990000;">iconv</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;utf-8&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;windows-1251&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;Пора переходить на cp-1251.&quot;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
<span style="color: #000000; font-weight: bold;">?&gt;</span></pre></div></div>

<p>Если <strong>iconv</strong> не помогает, то тогда используем что либо из тучи самодельных функций конвертирования кодировок. </p>
<p>Ниже представлена лучшая функция &#8211; из всего что можно было найти в интернете по данной тематике. В любом случае &#8211; судить вам&#8230;<br /> Просьба: отписываться о багах. Заранее спасибо.</p>
<p><strong>Листинг 2. Функция для перекодировки из utf-8 в windows-1251:</strong></p>

<div class="wp_syntax"><div class="code"><pre class="php" style="font-family:monospace;"><span style="color: #000000; font-weight: bold;">&lt;?</span>
<span style="color: #000000; font-weight: bold;">function</span> _charset_utf8_win<span style="color: #009900;">&#40;</span><span style="color: #000088;">$s</span><span style="color: #009900;">&#41;</span>
<span style="color: #009900;">&#123;</span>
  <span style="color: #000088;">$r</span><span style="color: #339933;">=</span><span style="color: #0000ff;">''</span><span style="color: #339933;">;</span>
  <span style="color: #000088;">$state</span><span style="color: #339933;">=</span><span style="color: #cc66cc;">1</span><span style="color: #339933;">;</span>
  <span style="color: #b1b100;">for</span> <span style="color: #009900;">&#40;</span><span style="color: #000088;">$i</span><span style="color: #339933;">=</span><span style="color: #cc66cc;">0</span><span style="color: #339933;">;</span><span style="color: #000088;">$i</span><span style="color: #339933;">&lt;</span>strlen<span style="color: #009900;">&#40;</span><span style="color: #000088;">$s</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span><span style="color: #000088;">$i</span><span style="color: #339933;">++</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span><span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> <span style="color: #000088;">$c</span><span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;ord(<span style="color: #006699; font-weight: bold;">$s</span>[<span style="color: #006699; font-weight: bold;">$i</span>]);&quot;</span> <span style="color: #b1b100;">switch</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$state</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> <span style="color: #b1b100;">case</span><span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> <span style="color: #cc66cc;">1</span><span style="color: #339933;">:=</span><span style="color: #0000ff;">&quot;&quot;</span> not<span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> a<span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> special<span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> symbol<span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span> <span style="color: #b1b100;">if</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$c</span><span style="color: #339933;">=</span><span style="color: #0000ff;">&quot;&quot;</span><span style="color: #339933;">&gt;&amp;</span>lt<span style="color: #339933;">;=</span><span style="color: #cc66cc;">127</span><span style="color: #009900;">&#41;</span>
        <span style="color: #009900;">&#123;</span>
          <span style="color: #000088;">$r</span><span style="color: #339933;">.=</span><span style="color: #000088;">$s</span><span style="color: #009900;">&#91;</span><span style="color: #000088;">$i</span><span style="color: #009900;">&#93;</span><span style="color: #339933;">;</span>
        <span style="color: #009900;">&#125;</span>
        <span style="color: #b1b100;">else</span>
        <span style="color: #009900;">&#123;</span>
          <span style="color: #b1b100;">if</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$c</span><span style="color: #339933;">&amp;</span>gt<span style="color: #339933;">;&amp;</span>gt<span style="color: #339933;">;</span><span style="color: #cc66cc;">5</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">==</span><span style="color: #cc66cc;">6</span><span style="color: #009900;">&#41;</span>
          <span style="color: #009900;">&#123;</span>
            <span style="color: #000088;">$c1</span><span style="color: #339933;">=</span><span style="color: #000088;">$c</span><span style="color: #339933;">;</span>
            <span style="color: #000088;">$state</span><span style="color: #339933;">=</span><span style="color: #cc66cc;">2</span><span style="color: #339933;">;</span>
          <span style="color: #009900;">&#125;</span>
          <span style="color: #b1b100;">else</span>
            <span style="color: #000088;">$r</span><span style="color: #339933;">.=</span><span style="color: #990000;">chr</span><span style="color: #009900;">&#40;</span><span style="color: #cc66cc;">128</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #009900;">&#125;</span>
        <span style="color: #b1b100;">break</span><span style="color: #339933;">;</span>
      <span style="color: #b1b100;">case</span> <span style="color: #cc66cc;">2</span><span style="color: #339933;">:</span> <span style="color: #666666; font-style: italic;">//an utf-8 encoded symbol has been meet</span>
        <span style="color: #000088;">$new_c2</span><span style="color: #339933;">=</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$c1</span><span style="color: #339933;">&amp;</span>amp<span style="color: #339933;">;</span><span style="color: #cc66cc;">3</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">*</span><span style="color: #cc66cc;">64</span><span style="color: #339933;">+</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$c</span><span style="color: #339933;">&amp;</span>amp<span style="color: #339933;">;</span><span style="color: #cc66cc;">63</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #000088;">$new_c1</span><span style="color: #339933;">=</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$c1</span><span style="color: #339933;">&amp;</span>gt<span style="color: #339933;">;&amp;</span>gt<span style="color: #339933;">;</span><span style="color: #cc66cc;">2</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">&amp;</span>amp<span style="color: #339933;">;</span><span style="color: #cc66cc;">5</span><span style="color: #339933;">;</span>
        <span style="color: #000088;">$new_i</span><span style="color: #339933;">=</span><span style="color: #000088;">$new_c1</span><span style="color: #339933;">*</span><span style="color: #cc66cc;">256</span><span style="color: #339933;">+</span><span style="color: #000088;">$new_c2</span><span style="color: #339933;">;</span>
        <span style="color: #b1b100;">switch</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$new_i</span><span style="color: #009900;">&#41;</span>
        <span style="color: #009900;">&#123;</span>
          <span style="color: #b1b100;">case</span>   <span style="color: #cc66cc;">1025</span><span style="color: #339933;">:</span> <span style="color: #000088;">$out_c</span><span style="color: #339933;">=</span><span style="color: #0000ff;">'Ё'</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">break</span><span style="color: #339933;">;</span>
          <span style="color: #b1b100;">case</span>   <span style="color: #cc66cc;">1105</span><span style="color: #339933;">:</span> <span style="color: #000088;">$out_c</span><span style="color: #339933;">=</span><span style="color: #0000ff;">'ё'</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">break</span><span style="color: #339933;">;</span>
          <span style="color: #b1b100;">case</span> <span style="color: #208080;">0x00ab</span><span style="color: #339933;">:</span> <span style="color: #000088;">$out_c</span><span style="color: #339933;">=</span><span style="color: #0000ff;">'«'</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">break</span><span style="color: #339933;">;</span>
          <span style="color: #b1b100;">case</span> <span style="color: #208080;">0x00bb</span><span style="color: #339933;">:</span> <span style="color: #000088;">$out_c</span><span style="color: #339933;">=</span><span style="color: #0000ff;">'»'</span><span style="color: #339933;">;</span> <span style="color: #b1b100;">break</span><span style="color: #339933;">;</span>
          <span style="color: #b1b100;">default</span><span style="color: #339933;">:</span> <span style="color: #000088;">$out_c</span><span style="color: #339933;">=</span><span style="color: #990000;">chr</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$new_i</span><span style="color: #339933;">-</span><span style="color: #cc66cc;">848</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #009900;">&#125;</span>
        <span style="color: #000088;">$r</span><span style="color: #339933;">.=</span><span style="color: #000088;">$out_c</span><span style="color: #339933;">;</span>
        <span style="color: #000088;">$state</span><span style="color: #339933;">=</span><span style="color: #cc66cc;">1</span><span style="color: #339933;">;</span>
        <span style="color: #b1b100;">break</span><span style="color: #339933;">;</span>
    <span style="color: #009900;">&#125;</span>
  <span style="color: #009900;">&#125;</span>
  <span style="color: #b1b100;">return</span> <span style="color: #000088;">$r</span><span style="color: #339933;">;</span>
<span style="color: #009900;">&#125;</span>
<span style="color: #000000; font-weight: bold;">?&gt;</span></pre></div></div>

<p>Если уж и это не подходит &#8211; попробуёте универсальный класс: <strong>ConvertCharset.class.php</strong>, который конвертирует любую кодировку в любую другую кодировку.</p>
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