Php ubb code parsing program

The code is as follows:

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/** + ---------------------------------------------------------- * UBB parsing + ---------------------------------------------------------- * @ Return string + ---------------------------------------------------------- */ Function ubb ($ Text ){ $ Text = trim ($ Text ); $ Text = ereg_replace ("n", "<br>", $ Text ); $ Text = preg_replace ("/\ t/is", "", $ Text ); $ Text = preg_replace ("/[hr]/is", "$ Text = preg_replace ("/[separator]/is", "<br/>", $ Text ); $ Text = preg_replace ("/[h1] (. + ?) [/H1]/is "," $ Text = preg_replace ("/[h2] (. + ?) [/H2]/is "," $ Text = preg_replace ("/[h3] (. + ?) [/H3]/is "," $ Text = preg_replace ("/[h4] (. + ?) [/H4]/is "," $ Text = preg_replace ("/[h5] (. + ?) [/H5]/is "," $ Text = preg_replace ("/[h6] (. + ?) [/H6]/is "," $ Text = preg_replace ("/[center] (. + ?) [/Center]/is "," <center> \ 1 </center> ", $ Text ); // $ Text = preg_replace ("/[url = ([^ [] *)] (. + ?) [/Url]/is "," <a href = \ 1 target = '_ blank'> \ 2 </a> ", $ Text ); $ Text = preg_replace ("/[url] (. + ?) [/Url]/is "," <a href = "\ 1" target = '_ blank'> \ 1 </a> ", $ Text ); $ Text = preg_replace ("/[url = (http: //. ++?)] (. + ?) [/Url]/is "," <a href = '\ 1' target =' _ blank '> \ 2 </a> ", $ Text ); $ Text = preg_replace ("/[url = (. +?)] (. + ?) [/Url]/is "," <a href = \ 1> \ 2 </a> ", $ Text ); $ Text = preg_replace ("/[img] (. + ?) [/Img]/is "," ", $ Text ); $ Text = preg_replace ("/[imgs (. +?)] (. + ?) [/Img]/is "," ", $ Text ); $ Text = preg_replace ("/[color = (. +?)] (. + ?) [/Color]/is "," <font color = \ 1> \ 2 </font> ", $ Text ); $ Text = preg_replace ("/[colorTxt] (. + ?) [/ColorTxt]/eis "," color_txt ('\ 1') ", $ Text ); $ Text = preg_replace ("/[style = (. +?)] (. + ?) [/Style]/is "," <div class = '\ 1'> \ 2 </div> ", $ Text ); $ Text = preg_replace ("/[size = (. +?)] (. + ?) [/Size]/is "," <font size = \ 1> \ 2 </font> ", $ Text ); $ Text = preg_replace ("/[sup] (. + ?) [/Sup]/is "," <sup> \ 1 </sup> ", $ Text ); $ Text = preg_replace ("/[sub] (. + ?) [/Sub]/is "," <sub> \ 1 </sub> ", $ Text ); $ Text = preg_replace ("/[pre] (. + ?) [/Pre]/is "," <pre> \ 1 </pre> ", $ Text ); $ Text = preg_replace ("/[emot] (. + ?) [/Emot]/eis "," emot ('\ 1') ", $ Text ); $ Text = preg_replace ("/[email] (. + ?) [/Email]/is "," <a href = 'mailto: \ 1'> \ 1 </a> ", $ Text ); $ Text = preg_replace ("/[I] (. + ?) [/I]/is "," <I> \ 1 </I> ", $ Text ); $ Text = preg_replace ("/[u] (. + ?) [/U]/is "," <u> \ 1 </u> ", $ Text ); $ Text = preg_replace ("/[B] (. + ?) [/B]/is "," <B> \ 1 </B> ", $ Text ); $ Text = preg_replace ("/[quote] (. + ?) [/Quote]/is "," <blockquote> Reference: <div style = 'border: 1px solid silver; background: # EFFFDF; color: #393939; padding: 5px '> \ 1 </div> </blockquote> ", $ Text ); $ Text = preg_replace ("/[code] (. + ?) [/Code]/eis "," highlight_code ('\ 1') ", $ Text ); $ Text = preg_replace ("/[php] (. + ?) [/Php]/eis "," highlight_code ('\ 1') ", $ Text ); $ Text = preg_replace ("/[sig] (. + ?) [/Sig]/is "," <div style = 'text-align: left; color: darkgreen; margin-left: 5% '> <br> ------------------------ <br> \ 1 <br> -------------------------- </div> ", $ Text ); Return $ Text; }

Preg_replace () function syntax

Preg_replace function basics and instance code
// Preg_replace (mixed $ pattern, mixed $ replacement, mixed $ subject [, int $ limit =-1 [, int & $ count]) subject: match search mode, replace
/*
The pattern to be searched. It can be a string or a string array.

After the electronic modifier causes the preg_replace function () to replace the treatment, the appropriate reference as a parameter is replaced by the php Tutorial code. Tip: Make sure that the replacement constitutes a valid php code string. Otherwise, php will complain about parsing errors including the preg_replace function line.

Return value

The preg_replace function () returns an array. If the parameter in this issue is an array or a string, otherwise.

If a match is found, a new problem will occur. Otherwise, the returned topic will remain unchanged or null if an error occurs.

For more details, see: http://www.111cn.net/phper/php-function/33530.htm