PHP - Html Transfer Code 超文本转换码，市面上这东西已经很滥（多）了，不过是这几天自己实践了一下~~~~

支持 多重嵌套 和 同标签嵌套，混合高亮显示（还有一点小问题）

自我感觉便于修改和扩充~~~~~~~~~~~

<?php
/**************************************************
*                                                 *
* Name    : Functions 4 Html Transfer Code (HTC)  *
* Version : 1.3.2                                 *
* Author  : Windy_sk                              *
* Create  : 2003-09-03                            *
* Modified: 2003-12-17                            *
* Email   : windy_sk@126.com                      *
* HomePage: None (Maybe Soon)                     *
* Notice  : U Can Use & Modify it freely,         *
*           BUT PLEASE HOLD THIS ITEM.            *
*                                                 *
**************************************************/

$htc_list = array(
                "B"                => "<b>\\1</b>",
                "I"                => "<i>\\1</i>",
                "U"                => "<u>\\1</u>",
                "CENTER"        => "<center>\\1</center>\n",
                "URL"                => "<a href='\\1'>\\1</a>",
                "EMAIL"                => "<a href='mailto:\\1'>\\1</a>",
                "IMAGE"                => "<br /><table align=center width='100%'><tr><td align='center'><img src='\\1' border='0' onload='org_w=this.offsetWidth;this.style.width=10;this.style.width=(org_w>parseInt(this.offsetParent.offsetWidth))?this.offsetParent.offsetWidth:org_w' onclick='window.open(this.src)' style='cursor:pointer' /></td></tr></table><br />\n",
                "DOWNLOAD"        => "exec:get_dl_html('\\1')",
                "LIST"                => "exec:get_list_html('\\1')",
                "QUOTE"                => "<center><table border='0' width='90%' cellspacing='0' cellpadding='0'><tr><td>&nbsp; 引用：</td></tr><tr><td><table width='100%' class='quote'><tr><td>\\1</td></tr></table></td></tr></table></center>\n",
                "IFRAME"        => "<table align=center><tr><td><iframe src='\\1' frameborder='0' allowtransparency='true' scrolling='yes' width='400' height='300'></iframe></td></tr></table>\n",
                "MOVE"                => "<center><marquee width='90%' behavior='alternate' scrollamount='3'>\\1</marquee><center>\n",
                "GLOW"                => "<table><tr><td class='glow'>\\1</td></tr></table>\n",
                "SHADOW"        => "<table><tr><td class='shadow'>\\1</td></tr></table>\n",
                "DROPSHADOW"        => "<table><tr><td class='dropshadow'>\\1</td></tr></table>\n",
                "GBMUSIC"        => "<bgsound src='\\1' loop='-1'>\n",
                "MUSIC"                => "<TABLE cellSpacing=0 cellPadding=0 align=center border=0><TBODY><TR><TD vAlign=top colSpan=3><EMBED name=music_rm align=top src='\\1' width='200' height='30' type='audio/x-pn-realaudio-plugin' console='ClipNN' loop='false' autostart='false' controls='ControlPanel' border='1' vspace='0' hspace='0'></EMBED><br><STRONG><A href='\\1'>Download The Music</A></STRONG></TD></TR></TBODY></TABLE>\n",               
                "FLASH"                => "<table align=center><tr><td><object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0' width='400'><param name='movie' value='\\1'><param name='quality' value='high'><embed src='\\1' quality='high' pluginspage='http://www.macromedia.com/go/getflashplayer' type='application/x-shockwave-flash' width='32' height='32'></embed></object></td></tr></table>\n",
                "SHOCKWAVE"        => "<table align=center><tr><td><object classid='clsid:166B1BCA-3F9C-11CF-8075-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab#version=8,5,0,0' width='400'><param name='src' value='\\1'><embed src='\\1' pluginspage='http://www.macromedia.com/shockwave/download/' width='400'></embed></object></td></tr></table>\n",
                "QUICKTIME"        => "<table align=center><tr><td><embed src='\\1' width='400' height='300' autoplay='true' loop='false' controller='true' playeveryframe='false' cache='false' scale='TOFIT' bgcolor='#000000' kioskmode='false' targetcache='false' pluginspage='http://www.apple.com/quicktime/'><br><STRONG><A href='\\1'>Download The Movie</A></STRONG></td></tr></table>\n",
                "REALPLAYER"        => "<TABLE cellSpacing=0 cellPadding=0 align=center border=0><TBODY><TR><TD vAlign=top colSpan=3><EMBED name=movie_rm align=top src='\\1' width='400' height='300' type='audio/x-pn-realaudio-plugin' console='ClipNN' loop='true' autostart='true' controls='ImageWindow,ControlPanel' border='1' vspace='0' hspace='0'></EMBED><br><STRONG><A href='\\1'>Download The Movie</A></STRONG></TD></TR></TBODY></TABLE>\n",
                "MEDIAPLAYER"        => "<table align=center><tr><td><object classid='clsid:22d6f312-b0f6-11d0-94ab-0080c74c7e95' width='400'><param name='ShowStatusBar' value='-1'><param name='Filename' value='\\1'><embed type='application/x-oleobject' codebase='http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701' flename='mp' src='\\1' width='400'></embed></object><br /><STRONG><A href='\\1'>Download The Movie</A></STRONG></td></tr></table>\n",
                "VOTE"                => "exec:get_vote_html('\\1')",
                );

$htc_list_att = array(
                "ALIGN"                => "<div align='\\1'>\\2</div>\n",
                "URL"                => "<a href='\\1'>\\2</a>",
                "EMAIL"                => "<a href='mailto:\\1'>\\2</a>",
                "IMAGE"                => "<br /><table align=center width='100%'><tr><td><img alt='\\1' src='\\2' border='0' onload='org_w=this.offsetWidth;this.style.width=10;this.style.width=(org_w>parseInt(this.offsetParent.offsetWidth))?this.offsetParent.offsetWidth:org_w;' onclick='window.open(this.src)' style='cursor:pointer' /></td></tr></table><br />\n",
                "FONTFACE"        => "<span style='FONT-FAMILY:\\1'>\\2</span>",
                "FONTSIZE"        => "<span style='font-size:\\1'>\\2</span>",
                "FONTCOLOR"        => "<span style='color:\\1'>\\2</span>",
                "DOWNLOAD"        => "exec:get_dl_html('\\1', '\\2')",
                "LIST"                => "exec:get_list_html('\\2','\\1')",
                "ATTACH"        => "exec:get_attach_html('\\2', '\\1')",
                "VOTE"                => "exec:get_vote_html('\\1','\\2')",
                );

$htc_list_spl = array(
                "PHP"                => "exec:get_highlight_html('\\1', 'php')",
                "CSS"                => "exec:get_highlight_html('\\1', 'css')",
                "HTML"                => "exec:get_highlight_html('\\1', 'html')",
                "SCRIPT"        => "exec:get_highlight_html('\\1', 'script')",
                "CODE"                => "exec:get_code_html('\\1')",
                "EXECUTE"        => "\\1",
                );


function get_highlight_html($str, $type = "php") {
        $type = strtolower($type);
        $type_func = $type."_highlight";
        $type = strtoupper($type);
        $result = "<center><table border='0' width='90%' cellspacing='0' cellpadding='0'>";
        if(!function_exists($type_func)) $type_func = "php_highlight";
        $result .= "
        <tr><td>高亮显示 <font color='red'>{$type}</font> 代码：</td></tr>
        <tr><td>
          <table width='100%' class='quote'><tr><td>
          ".$type_func($str)."
          </td></tr></table>
        ".($type=="HTML"?"<input type='button' value='运行代码' onclick=\"str=this.parentNode.firstChild.innerText;if(str==undefined){alert('Execute Codez Failed !');return;}code_win=window.open('about:blank');doc=code_win.document;doc.open();doc.write(str);doc.close();code_win.focus();\" />":"")."
        <input type='button' value='复制代码' onclick=\"try{window.clipboardData.setData('text',this.parentNode.firstChild.innerText);alert('Save Codez To The Clipboard !');}catch(e){alert('Codez Copy Failed !');}\">
        <input type='button' value='保存代码' onClick=\"try{str=this.parentNode.firstChild.innerText;code_win=window.open('about:blank','_blank','top=10000');code_win.document.writeln(str);code_win.document.execCommand('saveas','','code.html');code_win.close();}catch(e){alert('Codez Save Failed !');}\">
        </td></tr>
        </table></center>
        ";
        return $result;
}


function php_highlight($str) {
        $str = str_replace("\\\"","\"",$str);
        return highlight_string($str, true);
}


function css_highlight($str, $nl = true) {
        $color_1 = "red";
        $color_2 = "green";
        $color_3 = "blue";
        $str = str_replace("\\\"","\"",$str);
        $str = str_replace("\r", "", $str);
        preg_match_all("/[\\\*\.\w#: ]+\{[^\{\}]+\}/", $str, $arr_css);
        $arr_css = $arr_css[0];
        for($i=0; $i<count($arr_css); $i++) {
                $head = preg_replace("/([\\\*\.\w#: ]+\{)[^\{\}]+\}/", "<font color='{$color_1}'>\\1</font>".($nl?"<br />\n":""), $arr_css[$i]);
                $unit = preg_replace("/[\\\*\.\w#: ]+\{([^\{\}]+)\}/", "\\1", $arr_css[$i]);
                $unit_list = preg_split("/;\s*/", $unit);
                $unit = "\n";
                for($j=0; $j<count($unit_list); $j++) {
                        if(strlen($unit_list[$j])>0)
                                $unit .= "&nbsp; &nbsp; " . preg_replace("/\s*([\w\-]+)\s*:\s*(.*)/e", "'<font color=\'{$color_2}\'>\\1</font> : <font color=\'{$color_3}\'>'.htmlspecialchars('\\2').'</font> ; '", $unit_list[$j]) . ($nl?"<br />\n":"\n");
                }
                $arr_css[$i] = $head . $unit . "<font color='{$color_1}'>}</font>";
        }
        return join(($nl?"\n<br /><br />\n":"\n\n"), $arr_css);
}


function script_highlight_note($str, $mode = true) {
        $color_note = "gray";
        $str = str_replace("\\\"","\"",$str);
        $str = preg_replace("/<font color='[a-z]+'>(.*)<\/font>/isU", "\\1", $str);
        $str = $mode?"/*{$str}*/":"//{$str}";
        return "<font color='{$color_note}'>{$str}</font>";
}


function script_highlight($str, $nl = true) {
        $color_1 = "red";
        $color_2 = "blue";
        $color_3 = "brown";
        $color_4 = "green";
        $str = str_replace("\\\"","\"",$str);
        $str = htmlspecialchars($str);
        $str = str_replace("=","&equal;",$str);
        $str = str_replace("|","&vertical;",$str);
        $keywords = array(
                        "{$color_1}"        => array("null", "true", "false", "NaN"),
                        "{$color_2}"        => array("var", "for", "if", "else", "switch", "case", "function", "loop", "continue", "break", "&lt;", "&gt;", "!&equal;", "&equal;&equal;", "&equal;", "&amp;&amp;", "&vertical;&vertical;"),
                        "{$color_3}"        => array("window", "self", "this", "event", "document", "opener", "Navigator", "Math", "Array", "String", "Object", "Function", "Number"),
                        );
        foreach($keywords as $key => $value) {
                for($i=0; $i<count($value); $i++) {
                        $str = preg_replace("/(\W)(".$value[$i].")(\W)/", "\\1<font color='{$key}'>\\2</font>\\3", $str);
                }
        }
        $str = preg_replace("/(\.|\s)([a-z]+)\(/i" ,"\\1<font color='{$color_4}'>\\2</font>(", $str);
        $str = preg_replace("/\.(\w+)(?!\()/i" ,".<font color='{$color_3}'>\\1</font>", $str);
        $str = preg_replace("/\/\/([^\n]*)\n/e" ,"script_highlight_note('\\1', false)", $str);
        $str = preg_replace("/\/\*(.*?)\*\//es" ,"script_highlight_note('\\1')", $str);       
        $str = str_replace("\t", "&nbsp; &nbsp; ", $str);
        $str = str_replace("&equal;","=",$str);
        $str = str_replace("&vertical;","|",$str);
        return $nl?nl2br($str):$str;
}


function html_highlight_attr($att) {
        $color_1 = "red";
        $color_2 = "brown";
        $color_3 = "black";
        $att = str_replace("\\\"","\"",$att);
        $att = preg_replace("/=\s*('|\")([^'\"]+)\\1/eU","'=\\1'.preg_replace('/\s+/','|:s:|','\\2').'\\1'",$att);
        $att = str_replace("\\\"","\"",$att);
        $att .= " ";
        preg_match_all("/[a-z:\/\-]+(=(['\"]?).*[^\\\\]{1}\\2?)?\s+/iU", $att, $att_list);
        $att_list = $att_list[0];
        for($i=0; $i<count($att_list); $i++) {
                if(empty($att_list[$i])) continue;
                $att_list[$i] = trim($att_list[$i]);
                $att_list[$i] = preg_replace("/([^=]+)([=]?)(['\"]?)(.*)(\\3)/", "<font color='{$color_2}'>\\1</ font><font color='{$color_1}'>\\2</ font>\\3<font color='{$color_3}'>\\4</ font>\\3", $att_list[$i]);
        }
        return str_replace("|:s:|", " ", join(" ", $att_list));
}


function html_highlight($str) {
        $color_1 = "red";
        $color_2 = "blue";
        $color_3 = "gray";
        $str = str_replace("\\\"","\"",$str);
        preg_match_all("/<script([^>]*)>(.*)<\/script>/isU", $str, $arr_tmp);
        $arr_script = $arr_tmp[0];
        for($i=0; $i<count($arr_script); $i++) {
                $str = str_replace($arr_script[$i], "
::script_{$i}::
", $str);
                $arr_script[$i] = preg_replace("/<script([^>]*)>(.*)<\/script>/iseU", "'<font color=\'{$color_2}\'>&lt;SCRIPT '.html_highlight_attr('\\1').'&gt;</font><br />'.script_highlight(str_replace('\\\"','\"','\\2'), false).'<font color=\'{$color_2}\'>&lt;/SCRIPT&gt;</font>'", $arr_script[$i]);
        }
        $str = preg_replace("/(<textarea[^>]*>)(.*)(<\/textarea>)/ieU" ,"'\\1'.htmlspecialchars('\\2').'\\3'", $str);
        $str = preg_replace("/<!\-\-(.*)\-\->/seU" ,"'<!--'.htmlspecialchars('\\1').'-->'", $str);
        $str = preg_replace("/<style([^>]*)>(.*)<\/style>/isU" ,"<!style\\1>\\2</style!>", $str);
        $str = preg_replace("/<([a-z:]+)\s*(.*?)( \/|\/)?>/ise" ,"'<font color=\'{$color_2}\'>&lt;\\1 '.html_highlight_attr('\\2').'\\3&gt;</ font>'", $str);
        $str = preg_replace("/<(\/[a-z:]+)>/i" ,"<font color='{$color_2}'>&lt;\\1&gt;</font>", $str);
        $str = preg_replace("/<(!\-\-.*\-\-)>/sU" ,"<font color='{$color_3}'>&lt;\\1&gt;</font>", $str);
        $str = preg_replace("/<!style([^>]*)>(.*)<\/style!>/iseU" ,"'<font color=\'{$color_2}\'>&lt;STYLE '.html_highlight_attr('\\1').'&gt;</font><br />'.css_highlight(str_replace('\\\"','\"','\\2'), false).'<br /><font color=\'{$color_2}\'>&lt;/STYLE&gt;</font>'", $str);
        for($i=0; $i<count($arr_script); $i++) {
                $str = str_replace("
::script_{$i}::
", $arr_script[$i], $str);
        }
        $str = str_replace("</ font>", "</font>", $str);
        $str = str_replace("</ b>", "</b>", $str);
        $str = str_replace(" &gt;", "&gt;", $str);
        $str = str_replace("  "," &nbsp;",$str);
        $str = str_replace("\t"," &nbsp; &nbsp;",$str);
        return nl2br($str);
}


function get_file_pic($filename) {
        global $root_path;
        $ext = str_replace(".","",strrchr($filename,"."));
        $pic = $root_path."images/mime_type/{$ext}.gif";
        return file_exists($pic)?"$pic":$root_path."images/mime_type/attch.gif";
}


function get_dl_html($filename, $str = "") {
        return "<img src='".get_file_pic($filename)."' border='0'> <a href='$filename'>".(empty($str)?basename($filename):$str)."</a>";
}


function get_attach_html($filename, $id) {
        return "<img src='".get_file_pic($filename)."' border='0'> <a href='attach_manage.php?method=download&id=$id'>$filename</a>";
}


function get_vote_html($vote_idx, $message = ""){
        global $db_host, $db_user, $db_pass, $db_name;
        $db = new DB_Manager($db_host, $db_user, $db_pass);
        $db->Connect();
        $db->SelectDB($db_name);
        $db->Query("select * from mnms_poll where id=".$vote_idx);
        $record = $db->GetRS();
        $str = "";
        $db->close();
        unset($db);
        if($record) {
                $username = "dummy";
                $if_vote = !(strpos($record[vote_user], "|{$username}|")===false)
strpos($record[vote_user], "|".GetIp()."|");
                $str .= "
                        <fieldset>
                          <legend align='left' color=black>".(empty($message)?$record[vote_title]:$message)."</legend>
                          <form name='poll' action='poll_manage.php?method=vote' method='post'>
                          <table width='90%' align='center'>";
                $vote_list = split("::",$record[vote_list]);
                $vote_count = split("::",$record[vote_count]);
                $vote_users = count(split("\n", $record[vote_user])) - 1;
                $vote_sum = array_sum($vote_count);
                $str .= "
                            <tr><td colspan='2'> 目前共有 <font color='red'>{$vote_users}</font> 人参与了本投票 </td></tr>";
                if($vote_sum==0) $vote_sum = 1;
                for($i=0; $i<count($vote_list); $i++) {
                        $str .= "
                            <tr><td>".($if_vote?"":"<input type='hidden' value='".$vote_count[$i]."' name='vote_count[]'><input type='".($record[vote_multi]=='Y'?"checkbox":"radio")."' name='vote[]' value='{$i}'>").htmlspecialchars($vote_list[$i])."</td><td width='400'><img src='images/bars/bar".($i+1).".gif' width='".ceil($vote_count[$i]*300/$vote_sum)."' height='10'> 占总票数的 <font color='#990000'>".ceil((int)$vote_count[$i]*100/$vote_sum)."%</font></td></tr>\n";
                }
                $str .= "<tr><td colspan='2' align='center'><br>".($if_vote?"<b>您已经投过票了！</b>":"<input type='hidden' value='{$record[id]}' name='id'><input type='Submit' value=' 确 定 ' name='Submit'>&nbsp; &nbsp;<input type='reset' value=' 重 置 ' name='reset'>")."</td></tr>";
                $str .= "
                          </table>
                          </form>
                        </fieldset>";
        }
        return $str;
}


function get_code_html($str) {
        $str = str_replace("\\\"","\"",$str);
        return "
        <table align='center' width='550'>
          <tr><td><textarea cols='80' rows='10' name=Code>".htmlspecialchars($str)."</textarea><br>
            <input type='button' value='运行代码' onClick=\"str=this.parentNode.firstChild.value;code_win=window.open('about:blank');doc=code_win.document;doc.open();doc.write(str);doc.close();code_win.focus();\">
            <input type='button' value='复制代码' onclick=\"try{window.clipboardData.setData('text',this.parentNode.firstChild.value);alert('Save Codez To The Clipboard !');}catch(e){alert('Please Copy The Selected Codez !');this.parentNode.firstChild.select();}\">
            <input type='button' value='保存代码' onClick=\"str=this.parentNode.firstChild.value;code_win=window.open('about:blank','_blank','top=10000');code_win.document.writeln(str);code_win.document.execCommand('saveas','','code.html');code_win.close();\">
            （提示:可以先修改部分代码）
          </td></tr>
        </table>";
}


function get_list_html($content, $type = "") {
        $content = preg_replace("/(<br \/>)?[\r\n]+/", "\n", $content);
        $content = preg_replace("/[\r\n]+/", "\n", $content);
        $content = preg_replace("/^[\n]*(.*)[\n]*$/m", "\\1", $content);
        $content = str_replace("\n", "</li><li>", $content);
        $content = "<ul type='$type'><li>$content</li></ul>\n";
        return $content;
}


function html_trans($str) {
        $search  = array("&",                "'",                "\"",                "<",        ">",        "  ",                "\t");
        $replace = array("&amp;",        "&#39;",        "&quot;",        "&lt;",        "&gt;",        "&nbsp; ",        "&nbsp; &nbsp; ");
        return nl2br(str_replace($search, $replace, $str));
}


function link_url($str) {
        $str = preg_replace("/((http|ftp|mms|rtsp|pnm|mailto):\/\/[\w@:\.\/\?=&;#\-%]+)/i", "<a href='\\1' target='_blank'>\\1</a>", $str);
        $str = preg_replace("/(\w+@(\w+\.)+[\w]{2,3})/i", "<a href='mailto:\\1'>\\1</a>", $str);
        $str = preg_replace("/(href|src)='<a href=('.+')>[^<]+<\/a>'/iU", "\\1=\\2", $str);
        return $str;
}


function htc2html_loop($str) {
        global $htc_list, $htc_list_att;
        foreach($htc_list as $key => $value) {
                if(substr($value,0,5)=="exec:"){
                        $str = preg_replace("/\[$key\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*)\[\/$key\]/iexsU", substr($value,5), $str);
                } else {
                        $str = preg_replace("/\[$key\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*?)\[\/$key\]/ixsU", "$value", $str);
                }
        }
        foreach($htc_list_att as $key => $value) {
                if(substr($value,0,5)=="exec:"){
                        $str = preg_replace("/\[$key\s?=\s?([^\]]+)\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*)\[\/$key\]/iesxU", substr($value,5), $str);
                } else {
                        $str = preg_replace("/\[$key\s?=\s?([^\]]+)\]((.(?!\[$key(\s?=\s?([^\]]+))?\]))*)\[\/$key\]/isxU", "$value", $str);
                }
        }
        return $str;
}


function htc2html($str, $trans_url = true , $loop = 3) {
        global $htc_list_spl;
        $str = preg_replace("/(\[\w+\])\s*/ixs","\\1",$str);
        $str = preg_replace("/\s*(\[\/\w+\])/ixs","\\1",$str);
        foreach($htc_list_spl as $key => $value) {
                preg_match_all("/\[$key\](.*)\[\/$key\]/ixsU", $str, $arr_tmp);
                $arr_spl[$key] = $arr_tmp[0];
                for($i=0; $i<count($arr_spl[$key]); $i++) {
                        $str = str_replace($arr_spl[$key][$i], "
::{$key}_{$i}::
", $str);
                        if(substr($value,0,5)=="exec:"){
                                $arr_spl[$key][$i] = preg_replace("/\[$key\](.*)\[\/$key\]/iexsU", substr($value,5), $arr_spl[$key][$i]);
                        } else {
                                $arr_spl[$key][$i] = preg_replace("/\[$key\](.*)\[\/$key\]/ixsU", "$value", $arr_spl[$key][$i]);
                        }
                }
        }
        $str = html_trans($str);
        while($loop-- > 0) {
                if(!preg_match("/\[(\w+)(\s?=\s?([^\]]+))?\](.*)\[\/\\1\]/isU", $str)) break;
                $str = htc2html_loop($str);
        }
        if($trans_url) $str = link_url($str);
        foreach($htc_list_spl as $key => $value) {
                for($i=0; $i<count($arr_spl[$key]); $i++) {
                        $str = str_replace("
::{$key}_{$i}::
", $arr_spl[$key][$i], $str);
                }
        }
        return $str;
}
?>



使用方法：

echo htc2html($str);

OK 了~~~~~~~~