如何运用PHP转义符解决代码转换问题
linuxphpcodeexisthowstudytitlesystemsolveescapeConvertusequestion
在学习了系统：linux php4 oracle8i
<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><font color="#006699"></font></strong></span><span> </span></span></li>
<li class=""><span>//--标题,名字等字段入库处理(去首尾空格) </span></li>
<li class="alt"><span>function trans_string_trim($str) { </span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">trim</font></span><span>($str); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">eregi_replace</font></span><span>("'","''",$str); </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">stripslashes</font></span><span>($str); </span>
</li>
<li class="alt"><span>return $str; </span></li>
<li class=""><span>} </span></li>
<li class="alt"><span> </span></li>
<li class=""><span>//--文章入库处理，即textarea字段； </span></li>
<li class="alt"><span>function trans_string($str) { </span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">eregi_replace</font></span><span>("'","''",$str); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">stripslashes</font></span><span>($str); </span>
</li>
<li class=""><span>return $str; </span></li>
<li class="alt"><span>} </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>//--从库中显示在表单中；在text中以trans转换,在textarea中,无需转换,直接显示 </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>//--显示在WEB页面，过滤HTML代码；包括链接地址 </span></li>
<li class=""><span>function trans($string) { </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">htmlspecialchars</font></span><span>($string); </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(10),"</span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">></span></span></font></strong><span>",$string); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(32)," ",$string); </span>
</li>
<li class=""><span>return $string; </span></li>
<li class="alt"><span>} </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>//--显示在WEB页面，不过滤HTML代码； </span></li>
<li class=""><span>function trans_web($string) { </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(10),"</span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">></span></span></font></strong><span>",$string); </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(32)," ",$string); </span>
</li>
<li class="alt"><span>return $string; </span></li>
<li class=""><span>} </span></li>
<li class="alt"><span> </span></li>
<li class=""><span>//--显示在WEB页面，过滤HTML代码及头尾空格,主要用于显示用户昵称 </span></li>
<li class="alt"><span>function trans_trim($string) { </span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">trim</font></span><span>($string); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">htmlspecialchars</font></span><span>($string); </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(10),"</span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">></span></span></font></strong><span>",$string); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(32)," ",$string); </span>
</li>
<li class=""><span>return $string; </span></li>
<li class="alt"><span>} </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>//--显示在span中； </span></li>
<li class=""><span>function trans_span($string) { </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(10),"n",$string); </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>(chr(32)," ",$string); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">string</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">ereg_replace</font></span><span>('"',""",$string); </span>
</li>
<li class=""><span>return $string; </span></li>
<li class="alt"><span>} </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>//--在WEB上显示cookie,过滤html </span></li>
<li class=""><span>function trans_cookie($str) { </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">trans</font></span><span>($str); </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">stripslashes</font></span><span>($str); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">str</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">eregi_replace</font></span><span>("''","'",$str); </span>
</li>
<li class=""><span>return $str; </span></li>
<li class="alt"><span>} </span></li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span>
</li>
</ol>
最后，关于PHP转义符的用法再顺带补充一点，假如在span中显示文章中的一段，采用substr取定长字符串时，记得在span的参数后面多加一个空格，否则遇上截到半个汉字时，会搞乱html代码。
以上就是我们为大家奉上的关于PHP转义符解决代码转换问题的办法。
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