unicode与utf8相互转换
<div id="codeText" class="codeText"><ol style="margin:0 1px 0 0;padding:5px 0;" start="1" class="dp-css"><li><span style="color:#000000;">function unicode_encode<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span><span style="color:#FF0000;">name</span><span style="color:#0000CC;">)</span><br></span></li><li><span style="color:#0000CC;">{</span><br></li><li>
$<span style="color:#FF0000;">name</span> <span style="color:#0000CC;">=</span> iconv<span style="color:#0000CC;">(</span><span style="color:#FF00FF;">'UTF-8'</span><span style="color:#0000CC;">,</span> <span style="color:#FF00FF;">'UCS-2'</span><span style="color:#0000CC;">,</span> $<span style="color:#FF0000;">name</span><span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
$len <span style="color:#0000CC;">=</span> strlen<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span><span style="color:#FF0000;">name</span><span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
$str <span style="color:#0000CC;">=</span> <span style="color:#FF00FF;">''</span><span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#FF0000;">for</span> <span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span><span style="color:#0000FF;">i</span> <span style="color:#0000CC;">=</span> 0<span style="color:#0000CC;">;</span> $<span style="color:#0000FF;">i</span> <span style="color:#0000CC;"><</span> $len <span style="color:#0000CC;">-</span> 1<span style="color:#0000CC;">;</span> $<span style="color:#0000FF;">i</span> <span style="color:#0000CC;">=</span> $<span style="color:#0000FF;">i</span> <span style="color:#0000CC;">+</span> 2<span style="color:#0000CC;">)</span> <span style="color:#0000CC;">{</span><br></li><li>
$c <span style="color:#0000CC;">=</span> $<span style="color:#FF0000;">name</span><span style="color:#0000CC;">[</span><span style="color:#0000CC;">$</span><span style="color:#0000FF;">i</span><span style="color:#0000CC;">]</span><span style="color:#0000CC;">;</span><br></li><li>
$c2 <span style="color:#0000CC;">=</span> $<span style="color:#FF0000;">name</span><span style="color:#0000CC;">[</span><span style="color:#0000CC;">$</span><span style="color:#0000FF;">i</span> <span style="color:#0000CC;">+</span> 1<span style="color:#0000CC;">]</span><span style="color:#0000CC;">;</span><br></li><li>
if <span style="color:#0000CC;">(</span>ord<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>c<span style="color:#0000CC;">)</span> <span style="color:#0000CC;">></span> 0<span style="color:#0000CC;">)</span> <span style="color:#0000CC;">{</span> <span style="color:#0000CC;">/</span><span style="color:#0000CC;">/</span> 两个字节的文字<br></li><li>
$str <span style="color:#0000CC;">.</span><span style="color:#0000CC;">=</span> <span style="color:#FF00FF;">'\u'</span> <span style="color:#0000CC;">.</span> base_convert<span style="color:#0000CC;">(</span>ord<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>c<span style="color:#0000CC;">)</span><span style="color:#0000CC;">,</span> 10<span style="color:#0000CC;">,</span> 16<span style="color:#0000CC;">)</span> <span style="color:#0000CC;">.</span> base_convert<span style="color:#0000CC;">(</span>ord<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>c2<span style="color:#0000CC;">)</span><span style="color:#0000CC;">,</span> 10<span style="color:#0000CC;">,</span> 16<span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#0000CC;">}</span> else <span style="color:#0000CC;">{</span><br></li><li>
$str <span style="color:#0000CC;">.</span><span style="color:#0000CC;">=</span> $c2<span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#0000CC;">}</span><br></li><li>
<span style="color:#0000CC;">}</span><br></li><li>
return $str<span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#0000CC;">}</span><br></li><li>
<br></li><li>
function unicode_decode<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span><span style="color:#FF0000;">name</span><span style="color:#0000CC;">)</span><br></li><li>
<span style="color:#0000CC;">{</span><br></li><li>
<span style="color:#0000CC;">/</span><span style="color:#0000CC;">/</span> 转换编码，将Unicode编码转换成可以浏览的utf<span style="color:#0000CC;">-</span>8编码<br></li><li>
$pattern <span style="color:#0000CC;">=</span> <span style="color:#FF00FF;">'/([\w]+)|(\\\u([\w]{4}))/i'</span><span style="color:#0000CC;">;</span><br></li><li>
preg_match_all<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>pattern<span style="color:#0000CC;">,</span> $<span style="color:#FF0000;">name</span><span style="color:#0000CC;">,</span> $matches<span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
if <span style="color:#0000CC;">(</span><span style="color:#0000CC;">!</span>empty<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>matches<span style="color:#0000CC;">)</span><span style="color:#0000CC;">)</span> <span style="color:#0000CC;">{</span><br></li><li>
$<span style="color:#FF0000;">name</span> <span style="color:#0000CC;">=</span> <span style="color:#FF00FF;">''</span><span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#FF0000;">for</span> <span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>j <span style="color:#0000CC;">=</span> 0<span style="color:#0000CC;">;</span> $j <span style="color:#0000CC;"><</span> count<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>matches<span style="color:#0000CC;">[</span>0<span style="color:#0000CC;">]</span><span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span> $j<span style="color:#0000CC;">+</span><span style="color:#0000CC;">+</span><span style="color:#0000CC;">)</span> <span style="color:#0000CC;">{</span><br></li><li>
$str <span style="color:#0000CC;">=</span> $matches<span style="color:#0000CC;">[</span>0<span style="color:#0000CC;">]</span><span style="color:#0000CC;">[</span><span style="color:#0000CC;">$</span>j<span style="color:#0000CC;">]</span><span style="color:#0000CC;">;</span><br></li><li>
if <span style="color:#0000CC;">(</span>strpos<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>str<span style="color:#0000CC;">,</span> <span style="color:#FF00FF;">'\\u'</span><span style="color:#0000CC;">)</span> <span style="color:#0000CC;">=</span><span style="color:#0000CC;">=</span><span style="color:#0000CC;">=</span> 0<span style="color:#0000CC;">)</span> <span style="color:#0000CC;">{</span><br></li><li>
$<span style="color:#0000FF;">code</span> <span style="color:#0000CC;">=</span> base_convert<span style="color:#0000CC;">(</span>substr<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>str<span style="color:#0000CC;">,</span> 2<span style="color:#0000CC;">,</span> 2<span style="color:#0000CC;">)</span><span style="color:#0000CC;">,</span> 16<span style="color:#0000CC;">,</span> 10<span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
$code2 <span style="color:#0000CC;">=</span> base_convert<span style="color:#0000CC;">(</span>substr<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>str<span style="color:#0000CC;">,</span> 4<span style="color:#0000CC;">)</span><span style="color:#0000CC;">,</span> 16<span style="color:#0000CC;">,</span> 10<span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
$c <span style="color:#0000CC;">=</span> chr<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span><span style="color:#0000FF;">code</span><span style="color:#0000CC;">)</span> <span style="color:#0000CC;">.</span> chr<span style="color:#0000CC;">(</span><span style="color:#0000CC;">$</span>code2<span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
$c <span style="color:#0000CC;">=</span> iconv<span style="color:#0000CC;">(</span><span style="color:#FF00FF;">'UCS-2'</span><span style="color:#0000CC;">,</span> <span style="color:#FF00FF;">'UTF-8'</span><span style="color:#0000CC;">,</span> $c<span style="color:#0000CC;">)</span><span style="color:#0000CC;">;</span><br></li><li>
$<span style="color:#FF0000;">name</span> <span style="color:#0000CC;">.</span><span style="color:#0000CC;">=</span> $c<span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#0000CC;">}</span> else <span style="color:#0000CC;">{</span><br></li><li>
$<span style="color:#FF0000;">name</span> <span style="color:#0000CC;">.</span><span style="color:#0000CC;">=</span> $str<span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#0000CC;">}</span><br></li><li>
<span style="color:#0000CC;">}</span><br></li><li>
<span style="color:#0000CC;">}</span><br></li><li>
return $<span style="color:#FF0000;">name</span><span style="color:#0000CC;">;</span><br></li><li>
<span style="color:#0000CC;">}</span></li></ol></div>
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