如何运用PHP转义符解决代码转换问题_PHP教程-php教程-PHP中文网

如何运用PHP转义符解决代码转换问题_PHP教程

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发布： 2016-07-15 13:29:00

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<OL class=dp-xml><LI class=alt><SPAN><SPAN class=tag><STRONG><FONT color=#006699><?</FONT></STRONG></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN>//--标题,名字等字段入库处理(去首尾空格)  </SPAN><LI class=alt><SPAN>function trans_string_trim($str) {  </SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>str</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>trim</FONT></SPAN><SPAN>($str);  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>str</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>eregi_replace</FONT></SPAN><SPAN>("'","''",$str);  </SPAN></SPAN><LI class=""><SPAN>$</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></SPAN><LI class=alt><SPAN>return $str;  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>//--文章入库处理，即textarea字段；  </SPAN><LI class=alt><SPAN>function trans_string($str) {  </SPAN><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></SPAN><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></SPAN><LI class=""><SPAN>return $str;  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//--从库中显示在表单中；在text中以trans转换,在textarea中,无需转换,直接显示  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//--显示在WEB页面，过滤HTML代码；包括链接地址  </SPAN><LI class=""><SPAN>function trans($string) {  </SPAN><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></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>string</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>ereg_replace</FONT></SPAN><SPAN>(chr(10),"</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>br</SPAN><SPAN class=tag>></SPAN></FONT></STRONG><SPAN>",$string);  </SPAN></SPAN><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></SPAN><LI class=""><SPAN>return $string;  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//--显示在WEB页面，不过滤HTML代码；  </SPAN><LI class=""><SPAN>function trans_web($string) {  </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>string</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>ereg_replace</FONT></SPAN><SPAN>(chr(10),"</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>br</SPAN><SPAN class=tag>></SPAN></FONT></STRONG><SPAN>",$string);  </SPAN></SPAN><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></SPAN><LI class=alt><SPAN>return $string;  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>//--显示在WEB页面，过滤HTML代码及头尾空格,主要用于显示用户昵称  </SPAN><LI class=alt><SPAN>function trans_trim($string) {  </SPAN><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></SPAN><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></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>string</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>ereg_replace</FONT></SPAN><SPAN>(chr(10),"</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>br</SPAN><SPAN class=tag>></SPAN></FONT></STRONG><SPAN>",$string);  </SPAN></SPAN><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></SPAN><LI class=""><SPAN>return $string;  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//--显示在span中；  </SPAN><LI class=""><SPAN>function trans_span($string) {  </SPAN><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></SPAN><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></SPAN><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></SPAN><LI class=""><SPAN>return $string;  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//--在WEB上显示cookie,过滤html  </SPAN><LI class=""><SPAN>function trans_cookie($str) {  </SPAN><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></SPAN><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></SPAN><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></SPAN><LI class=""><SPAN>return $str;  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></FONT></STRONG></SPAN><SPAN> </SPAN></SPAN></LI></OL>

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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。