CodeIgniter uses phpcms template engine_PHP tutorial

CodeIgniter is very suitable for small site application development, but its built-in view function may cause trouble for front-end personnel who do not understand PHP. In comparison, the view template parsing of phpcms is much more powerful, so here we strip out the template parsing function of PHPCMS and add it to PHPCMS.
First add template_cache.php in CodeIgniter libraries

Copy the code The code is as follows:

/**
 *  模板解析缓存
 */
final class template_cache {

    public $cache_path;
    public function __construct()
    {
        //$CI =& get_instance();
        $this->cache_path = APPPATH.'views';
    }

    /**
     * 编译模板
     *
     * @param $module    模块名称
     * @param $template    模板文件名
     * @param $istag    是否为标签模板
     * @return unknown
     */

    public function template_compile($module, $template, $style = 'default') {

        $tplfile= APPPATH.'views'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php';

        if (! file_exists ( $tplfile )) {
            show_error($tplfile ,  500 ,  'Template does not exist(1)');
        }

        $content = @file_get_contents ( $tplfile );

        $filepath = $this->cache_path.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR;

       
        if(!is_dir($filepath)) {
            mkdir($filepath, 0777, true);
        }
        $compiledtplfile = $filepath.$template.'.php';
        $content = $this->template_parse($content);
        $strlen = file_put_contents ( $compiledtplfile, $content );
        chmod ( $compiledtplfile, 0777 );
        return $strlen;
    }

    /**
     * 更新模板缓存
     *
     * @param $tplfile    模板原文件路径
     * @param $compiledtplfile    编译完成后，写入文件名
     * @return $strlen 长度
     */
    public function template_refresh($tplfile, $compiledtplfile) {
        $str = @file_get_contents ($tplfile);
        $str = $this->template_parse ($str);
        $strlen = file_put_contents ($compiledtplfile, $str );
        chmod ($compiledtplfile, 0777);
        return $strlen;
    }
   

    /**
     * 解析模板
     *
     * @param $str    模板内容
     * @return ture
     */
    public function template_parse($str) {
        $str = preg_replace ( "/\{template\s+(.+)\}/", "", $str );
        $str = preg_replace ( "/\{include\s+(.+)\}/", "", $str );
        $str = preg_replace ( "/\{view\s+(.+)\}/", "load->view(\\1); ?>", $str );
        $str = preg_replace ( "/\{php\s+(.+)\}/", "", $str );
        //alex fix
        $str = preg_replace ( "/\{{if\s+(.+?)\}}/", "``if \\1``", $str );
        $str = preg_replace ( "/\{{else\}}/", "``else``", $str );
        $str = preg_replace ( "/\{{\/if\}}/", "``/if``", $str );

        $str = preg_replace ( "/\{if\s+(.+?)\}/", "", $str );
        $str = preg_replace ( "/\{else\}/", "", $str );
        $str = preg_replace ( "/\{elseif\s+(.+?)\}/", "", $str );
        $str = preg_replace ( "/\{\/if\}/", "", $str );

        //for 循环
        $str = preg_replace("/\{for\s+(.+?)\}/","",$str);
        $str = preg_replace("/\{\/for\}/","",$str);
        //++ --
        $str = preg_replace("/\{\+\+(.+?)\}/","",$str);
        $str = preg_replace("/\{\-\-(.+?)\}/","",$str);
        $str = preg_replace("/\{(.+?)\+\+\}/","",$str);
        $str = preg_replace("/\{(.+?)\-\-\}/","",$str);
        //alex fix
        $str = preg_replace ( "/\``if\s+(.+?)\``/", "{{if \\1}}", $str );
        $str = preg_replace ( "/\``else``/", "{{else}}", $str );
        $str = preg_replace ( "/\``\/if\``/", "{{/if}}", $str );

        $str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\}/", "", $str );
        $str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}/", " \\3) { ?>", $str );
        $str = preg_replace ( "/\{\/loop\}/", "", $str );
        $str = preg_replace ( "/\{([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*\(([^{}]*)\))\}/", "", $str );
        $str = preg_replace ( "/\{\\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*\(([^{}]*)\))\}/", "", $str );
        $str = preg_replace ( "/\{(\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/", "", $str );
        $str = preg_replace("/\{(\\$[a-zA-Z0-9_\[\]\'\"\$\x7f-\xff]+)\}/es", "\$this->addquote('')",$str);
        $str = preg_replace ( "/\{([A-Z_\x7f-\xff][A-Z0-9_\x7f-\xff]*)\}/s", "", $str );
        $str = preg_replace("/\{pc:(\w+)\s+([^}]+)\}/ie", "self::pc_tag('$1','$2', '$0')", $str);
        $str = preg_replace("/\{\/pc\}/ie", "self::end_pc_tag()", $str);
        $str = "" . $str;
        return $str;
    }

    /**
* Escape // to /
*
* @param $var Escaped character
* @return Escaped character
*/
    public function addquote($var) {
        return str_replace ( "\"", """, preg_replace ( "/[([a-zA-Z0-9_-.x7f-xff]+)]/s", "['\1']", $var ) );
    }

    /**
* Parse PC tags
* @param string $op operation mode
* @param string $data parameters
* @param string $html All matched HTML codes
*/
    public static function pc_tag($op, $data, $html) {
        preg_match_all("/([a-z]+)=["]?([^"]+)["]?/i", stripslashes($data), $matches, PREG_SET_ORDER);
        $arr = array('action','num','cache','page', 'pagesize', 'urlrule', 'return', 'start','setpages');
        $tools = array('json', 'xml', 'block', 'get');
        $datas = array();
        $tag_id = md5(stripslashes($html));
        //可视化条件
        $str_datas = 'op='.$op.'&tag_md5='.$tag_id;
        foreach ($matches as $v) {
            $str_datas .= $str_datas ? "&$v[1]=".($op == 'block' && strpos($v[2], '$') === 0 ? $v[2] : urlencode($v[2])) : "$v[1]=".(strpos($v[2], '$') === 0 ? $v[2] : urlencode($v[2]));
            if(in_array($v[1], $arr)) {
                $$v[1] = $v[2];
                continue;
            }
            $datas[$v[1]] = $v[2];
        }
        $str = '';
        $setpages = isset($setpages) && intval($setpages) ? intval($setpages) : 10;
        $num = isset($num) && intval($num) ? intval($num) : 20;
        $cache = isset($cache) && intval($cache) ? intval($cache) : 0;
        $return = isset($return) && trim($return) ? trim($return) : 'data';
        if (!isset($urlrule)) $urlrule = '';
        if (!empty($cache) && !isset($page)) {
            $str .= '$tag_cache_name = md5(implode('&','.self::arr_to_html($datas).').''.$tag_id.'');if(!$'.$return.' = tpl_cache($tag_cache_name,'.$cache.')){';
        }
        if (in_array($op,$tools)) {
            switch ($op) {
                case 'json':
                        if (isset($datas['url']) && !empty($datas['url'])) {
                            $str .= '$json = @file_get_contents(''.$datas['url'].'');';
                            $str .= '$'.$return.' = json_decode($json, true);';
                        }
                    break;

                case 'block':
                    $str .= '$block_tag = pc_base::load_app_class(\'block_tag\', \'block\');';
                    $str .= 'echo $block_tag->pc_tag('.self::arr_to_html($datas).');';
                    break;
            }
        } else {
            if (!isset($action) || empty($action)) return false;
            if ( file_exists(APPPATH.'libraries'.DIRECTORY_SEPARATOR.$op.'_tag.php')) {
                $str .= 'if(!isset($CI))$CI =& get_instance();$CI->load->library("'.$op.'_tag");if (method_exists($CI->'.$op.'_tag, \''.$action.'\')) {';   
                if (isset($start) && intval($start)) {
                    $datas['limit'] = intval($start).','.$num;
                } else {
                    $datas['limit'] = $num;
                }
                if (isset($page)) {
                    $str .= '$pagesize = '.$num.';';
                    $str .= '$page = intval('.$page.') ? intval('.$page.') : 1;if($page                    $str .= '$offset = ($page - 1) * $pagesize;$urlrule="'.$urlrule.'";';
                    $datas['limit'] = '$offset.",".$pagesize';
                    $datas['action'] = $action;
                    $str .= '$'.$op.'_total = $CI->'.$op.'_tag->count('.self::arr_to_html($datas).');';

                    $str .= 'if($'.$op.'_total>$pagesize){ $pages = pages($'.$op.'_total, $page, $pagesize, $urlrule); } else { $pages="" ;}';
                }
                $str .= '$'.$return.' = $CI->'.$op.'_tag->'.$action.'('.self::arr_to_html($datas).');';
                $str .= '}';
            }
        }
        if (!empty($cache) && !isset($page)) {
            $str .= 'if(!empty($'.$return.')){setcache($tag_cache_name, $'.$return.', \'tpl_data\');}';
            $str .= '}';
        }
        return "";
    }

    /**
     * PC标签结束
     */
    static private function end_pc_tag() {
        return '';}?>';
    }

    /**
* Convert data to HTML code
* @param array $data array
*/
    private static function arr_to_html($data) {
        if (is_array($data)) {
            $str = 'array(';
            foreach ($data as $key=>$val) {
                if (is_array($val)) {
                    $str .= "'$key'=>".self::arr_to_html($val).",";
                } else {
                    if (strpos($val, '$')===0) {
                        $str .= "'$key'=>$val,";
                    } else {
                        $str .= "'$key'=>'".self::new_addslashes($val)."',";
                    }
                }
            }
            return $str.')';
        }
        return false;
    }

    /**
* Return the string or array processed by addslashes
* @param $string The string or array to be processed
* @return mixed
*/
    function new_addslashes($string){
        if(!is_array($string)) return addslashes($string);
        foreach($string as $key => $val) $string[$key] = new_addslashes($val);
        return $string;
    }
}

然后在global_helper中增加一个 template函数

复制代码 代码如下:

if ( ! function_exists('template'))
{
    /**
* Template call
*
* @param $module
* @param $template
* @param $istag
* @return unknown_type
*/
    function template($module = 'expatree', $template = 'index', $style = 'expatree',$return_full_path=true) {
        global $CI;
        if(!isset($CI))$CI =& get_instance();
        if(!$style) $style = 'default';
        $CI->load->library('template_cache','template_cache');
        $template_cache = $CI->template_cache;
        //编译模板生成地址
        $compiledtplfile = $template_cache->cache_path.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.EXT;
        //视图文件
        $tplfile= APPPATH.'views'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.EXT;
        if(file_exists($tplfile)) {
            if(!file_exists($compiledtplfile) || (@filemtime($tplfile) > @filemtime($compiledtplfile))) {   
                $template_cache->template_compile($module, $template, $style);
            }
        } else {
            //如果没有就调取默认风格模板
            $compiledtplfile = $template_cache->cache_path.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.EXT;
            if(!file_exists($compiledtplfile) || (file_exists($tplfile) && filemtime($tplfile) > filemtime($compiledtplfile))) {
                $template_cache->template_compile($module, $template, 'default');
            } elseif (!file_exists($tplfile)) {
                show_error($tplfile ,  500 ,  'Template does not exist(0)');
            }
        }

        if($return_full_path)
            return $compiledtplfile;
        else
            return 'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template;
    }
}

然后在MY_Controller.php，增加一个方法

复制代码 代码如下:

/**
* Automatic template call
*
* @param $module
* @param $template
* @param $istag
* @return unknown_type
*/
   protected function view($view_file,$page_data=false,$cache=false)
   {
       $view_file=$this->template($this->page_data['controller_name'].$this->page_data['module_name'],$view_file);

       $this->load->view($view_file,$page_data);
   }

This is basically complete, you can directly use the phpcms template syntax.

http://www.bkjia.com/PHPjc/825114.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/825114.htmlTechArticleCodeIgniter is very suitable for small site application development, but its built-in view function may be confusing to front-end personnel who do not understand PHP. Bring trouble. In comparison, the view template parsing of phpcms is much more powerful, so...