The rough implementation process of a compiled PHP template engine

The rough implementation process of a compiled PHP template engine_PHP Tutorial

WBOY

Release： 2016-07-13 17:52:34

Original

1288 people have browsed it

JTemplate.class.php

001
002
/**
003
* @author Jiawei
004
* @Completed in 2012-6-29 0:23
005
*/
006
class JTemplate{
007
//The variable passed in through the assign function temporarily stores the array
008
Private $templateVar = array();
009
//Template directory
010
Private $templateDir = '';
011
//Compile directory
012
Private $templateCompileDir = '';
013

014
Private $fileName = '';
015
/**
016
* Constructor
017
* @param string $templateDir template directory
018
* @param string $templateComplieDir template compilation directory
019
*/
020
Public function __construct($templateDir,$templateComplieDir){
021
          $this->templateDir = $templateDir;
022
           $this->templateCompileDir = $templateComplieDir;
023
}
024
/**
025
*Show template
026
* @param string $fileName Template file name
027
*/
028
Public function display($fileName){
029
$this->fileName = $fileName;
030
If(file_exists($this->templateDir.'/'.$this->fileName)){
031
$compileFileName = $this->templateCompileDir.'/'.$this->file_safe_name().'.php';
032
If(!file_exists($compileFileName) || filemtime($compileFileName)< filemtime($this->templateDir.'/'.$this->fileName)){
033
$this->del_old_file();
034
$this->compile();
035
            }
036
               extract($this->templateVar);
037
                   include $compileFileName;
038
         }else{
039
                  $this->error('Sorry, the template file '.$this->fileName.' does not exist!!');
040
}
041
}
042
/**
043
* Get the compiled file name
044
*/
045
Private function get_compile_file(){
046
           $compileFile = explode('.',$this->fileName);
047
unset($compileFile[count($compileFile)-1]);
048
          return implode('.',$compileFile);
049
}
050
/**
051
* Compile
052
*/
053
Private function compile(){
054
$fileHandle = @fopen($this->templateDir.'/'.$this->fileName, 'r');
055
while(!feof($fileHandle)){
056
                 $fileContent = fread($fileHandle,1024);
057
}
058
            fclose($fileHandle);
059
$fileContent = $this->template_replace($fileContent);
060
//$compileFile = $this->get_compile_file($fileName);
061
        $fileHandle = @fopen($this->templateCompileDir.'/'.$this->file_safe_name().'.php','w');
062
        if($fileHandle){
063
            fwrite($fileHandle, $fileContent);
064
            fclose($fileHandle);
065
        }else{
066
            $this->error('Sorry,Compile dir can not write!');
067
        }
068
    }
069
    /**
070
* * Template value
071
* @param string $valueName variable name used in the template
072
* @param $value variable value
073
*/
074
    public function assign($valueName,$value){
075
        $this->templateVar[$valueName] = $value;
076
    }
077

078
    /**
079
* Template regular replacement
080
* @param string $content Replacement content
081
* @return string replaced content
082
*/
083
    private function template_replace($content){
084
        $orginArray = array(
085
            '//s',
086
            '//s',
087
            '/(.+?)/s',
088
            '//s',
089
            '//s',
090
            '//s',
091
            '//s',
092
            '//s',
093
            '/{P:(.+?):}/s',
094
            '/{C:(w+)}/s',
095
            '/{I:(.+?)}/s',
096
            '/{F:(.+?)}/s',
097
            '/{EF:(.+?)}/s',
098
            '/{([a-zA-Z0-9_[]'"$.x7f-xff]+)}/s',
099
        );
100

101
        $changeArray = array(
102
            '',
103
            '$$3){$countLoop++;?>',
104
            '$1',
105
            '',
106
            '',
107
            '',
108
            '',
109
            '',
110
            '',
111
            '',
112
            'templateDir.'/$1";?>',
113
            '',
114
            '',
115
            '',
116
        );
117
        return $repContent=preg_replace($orginArray,$changeArray,$content);
118
    }
119
    /**
120
     * 删除旧文件
121
     */
122
    private function del_old_file(){
123
        $compileFile = $this->get_compile_file($this->fileName);
124
        $files = glob($this->templateCompileDir.'/'.$compileFile.'*.php');
125
        // print_r($files);
126
        if($files){
127
            @unlink($files[0]);
128
        }
129
    }
130
    /**
131
     * 编译文件名安全处理方法
132
     * @return string 返回编译文件名
133
     */
134
    private function file_safe_name(){
135
        $compileFile = $this->get_compile_file($this->fileName);
136
        return $compileFile.filemtime($this->templateDir.'/'.$this->fileName);
137
    }
138

139
    /**
140
     * 错误输出函数
141
     * @param string $content 错误输出信息
142
     */
143
    private function error($content){
144
        $stringHtml = '

';
145
        $stringHtml .= 'Error information:
';
146
        $stringHtml .= '';
147
        $stringHtml .= $content;
148
        $stringHtml .= '';
149
        $stringHtml .= '

';
150
exit($stringHtml);
151
}
152
}
153
?>
index.php

view sourceprint?
01
02
/**
03
* @author Jiawei
04
*/
05
include_once 'JTemplate/JTemplate.class.php';
06
$template = new JTemplate('template','compile');
07
$a = array('a','b','c','d');
08
define('_CORE_','aaa');
09
$template->assign('a', $a);
10
$template->display('index.html');
11
?>
作者：袁家伟