截断字符以省略号代替代码,PHP代码库,德仔网

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【PHP】截断字符以省略号代替

作者:Dezai.CN / 发布于2011/6/11/ 501

<div><span style="color: rgb(0,0,0); font-weight: bold"><?php</span>
<span style="color: rgb(0,0,0); font-weight: bold">function</span> TruncateString<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$strString</span>, <span style="color: rgb(0,0,255)">$nLength</span> = <span style="color: rgb(204,102,204)">15</span>, <span style="color: rgb(0,0,255)">$strTrailing</span> = <span style="color: rgb(255,0,0)">"..."</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="font-style: italic; color: rgb(128,128,128)">// Take off chars for the trailing</span>
<span style="color: rgb(0,0,255)">$nLength</span> -= <a href="http://www.php.net/strlen" target="_blank"><span style="color: rgb(0,0,102)">strlen</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$strTrailing</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span><a href="http://www.php.net/strlen" target="_blank"><span style="color: rgb(0,0,102)">strlen</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$strString</span><span style="color: rgb(102,204,102)">)</span> > <span style="color: rgb(0,0,255)">$nLength</span><span style="color: rgb(102,204,102)">)</span> 
<span style="color: rgb(102,204,102)">{</span>
<span style="font-style: italic; color: rgb(128,128,128)">// -- String exceeded length, truncate and add trailing dots</span>
<span style="color: rgb(177,177,0)">return</span> <a href="http://www.php.net/substr" target="_blank"><span style="color: rgb(0,0,102)">substr</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$strString</span>, <span style="color: rgb(204,102,204)">0</span>, <span style="color: rgb(0,0,255)">$nLength</span><span style="color: rgb(102,204,102)">)</span> . <span style="color: rgb(0,0,255)">$strTrailing</span>;
<span style="color: rgb(102,204,102)">}</span> 
<span style="color: rgb(177,177,0)">else</span> 
<span style="color: rgb(102,204,102)">{</span> 
<span style="font-style: italic; color: rgb(128,128,128)">// -- String was already short enough, return the string</span>
<span style="color: rgb(177,177,0)">return</span> <span style="color: rgb(0,0,255)">$strString</span>; 
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(0,0,0); font-weight: bold">?></span></div>

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