一個PHP模板,主要想體現一下思路

思路:
欲在速度和易用(主要指的是美工設計的方便性)之間取得一個平衡點.於是採用了由html檔案產生php檔案的辦法(編譯?)
也想在分離顯示邏輯和分離html代碼之間平衡一下

例如一個論壇首頁(index.php):

代碼:

<?php require('./template.php'); //由html產生的php檔案的首碼,區別使用多種風格. $tpl_prefix = 'default'; //模板檔案名稱 $tpl_index = 'index'; $tpl = new Template($tpl_prefix); $cats = array( array('forum_id'=>'1','forum_cat_id'=>'0','forum_name'=>'PHP學習'), array('forum_id'=>'2','forum_cat_id'=>'0','forum_name'=>'MYSQL學習') ); $forums = array( array('forum_id'=>'3','forum_cat_id'=>'1','forum_name'=>'PHP進階教程'), array('forum_id'=>'4','forum_cat_id'=>'1','forum_name'=>'PHP初級教程'), array('forum_id'=>'5','forum_cat_id'=>'2','forum_name'=>'MYSQL相關資料') ); if ($cats) { if ($tpl->chk_cache($tpl_index))//檢查判斷是否需要重新生產PHP模板檔案. { $tpl->load_tpl($tpl_index);//載入html模板檔案. //替換PHP語句 $tpl->assign_block("{block_cat}","<?foreach(\$cats as \$cat) {?>"); $tpl->assign_block("{/block_cat}","<?}?>"); $tpl->assign_block("{block_forum}","<?foreach(\$forums as \$forum) { \nif(\$forum['forum_cat_id'] == \$cat['forum_id']) {?>"); $tpl->assign_block("{/block_forum}","<?}\n}?>"); //生產PHP模板檔案. $tpl->write_cache($tpl_index); } } //包含PHP模板檔案. include($tpl->parse_tpl($tpl_index)); ?>

對應的html模板檔案(index.html):

代碼:

{block_cat} <table width="100%" border="0" cellspacing="1" cellpadding="1" bgcolor="#000000" align="center"> <tr align="{=TR_ALING}" bgcolor="#FFFFFF"> <td colspan="6"><span class="title"><b>{=$cat['forum_name']}</b></span></td> </tr> {block_forum} <tr bgcolor="#FFFFFF"> <td valign="top">{=$forum['forum_name']}</td> </tr> {/block_forum} </table> <br> {/block_cat}

經過處理,裡面的{block_forum}{block_cat}標籤被替換成PHP迴圈語句,用於顯示數組種所有元素.

產生的PHP模板檔案(default_index.php):

代碼:

<?foreach($cats as $cat) {?> <table width="100%" border="0" cellspacing="1" cellpadding="1" bgcolor="#000000" align="center"> <tr align="<?=TR_ALING?>" bgcolor="#FFFFFF"> <td colspan="6"><span class="title"><b><?=$cat['forum_name']?></b></span></td> </tr> <?foreach($forums as $forum) { if($forum['forum_cat_id'] == $cat['forum_id']) {?> <tr bgcolor="#FFFFFF"> <td valign="top"><?=$forum['forum_name']?></td> </tr> <?} }?> </table> <br> <?}?>

default_index.php被包含在index.php,這樣就可以正常顯示了.

這樣,HTML模板檔案可以用dw來進行修改美化,美工人員應該會方便一些.

template.php

代碼:

<?php /********************************************************************************* * 模板類(Template) * 最後修改時間:2004.4.07 本論壇使用 * * * **********************************************************************************/ class Template { //$this->$template,儲存模板資料. var $template = ''; //模板路徑. var $tpl_path = ''; //模板首碼(風格名稱). var $tpl_prefix = ''; //cache路徑(編譯後的路徑). var $cache_path = ''; //css檔案路徑. var $css_path = ''; //header檔案路徑. var $header_path = ''; //footer檔案路徑 var $footer_path = ''; /** * 初始化模板路徑. */ function Template($root = 'default') { //模板首碼(風格名稱). $this->tpl_prefix = $root; //模板檔案路徑. $this->tpl_path = './templates/' . $root . '/'; //產生的PHP檔案存放路徑. $this->cache_path = './template_data/' .$this->tpl_prefix . '_'; return true; } /** * chk_cache,檢查"編譯"後的模板是否需要更新,判斷依據:最後修改時間,"編譯"檔案是否存在. */ function chk_cache($tpl_index) { $tpl_file = $this->tpl_path . $tpl_index . '.html'; $cache_file = $this->cache_path . $tpl_index . '.php'; //判斷是否需要更新. if(!file_exists($cache_file)) { return true; } elseif(filemtime($tpl_file) > filemtime($cache_file)) { return true; } } /** * 輸出模板檔案. */ function parse_tpl($tpl_index,$message='') { return $this->cache_path . $tpl_index . '.php'; } /** * 載入模板檔案. */ function load_tpl($tpl_index) { $tpl_file = $this->tpl_path . $tpl_index . '.html'; $fp = fopen($tpl_file, 'r'); $this->template = fread($fp, filesize($tpl_file)); fclose($fp); } /** * 替換變數,並且"編譯"模板. */ function write_cache($tpl_index) { $cache_file = $this->cache_path . $tpl_index . '.php'; //變數顯示. $this->template = preg_replace("/(\{=)(.+?)(\})/is", "<?=\\2?>", $this->template); //介面語言替換. $this->template = preg_replace("/\{lang +(.+?)\}/ies", "\$lang['main']['\\1']", $this->template); $fp = fopen($cache_file, 'w'); flock($fp, 3); fwrite($fp, $this->template); fclose($fp); } /** * 替換block. */ function assign_block($search,$replace) { $this->template = str_replace($search,$replace,$this->template); } } ?>