General implementation process of a compiled PHP template engine

JTemplate. class. php

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<? Php
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/**
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* <A href = "http://my.oschina.net/arthor" target = "_ blank" rel = "nofollow"> @ author </a> Jiawei
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* @ Completed in
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*/
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Class JTemplate {
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// The variables passed in through the assign function temporarily store Arrays
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Private $ templateVar = array ();
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// Template directory
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Private $ templateDir = '';
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// Compile the Directory
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Private $ templateCompileDir = '';
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Private $ fileName = '';
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/**
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* Constructor
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* @ Param string $ templateDir template directory
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* @ Param string $ templateComplieDir template compilation directory
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*/
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Public function _ construct ($ templateDir, $ templateComplieDir ){
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$ This-> templateDir = $ templateDir;
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$ This-> templateCompileDir = $ templateComplieDir;
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}
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/**
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* Display template
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* @ Param string $ fileName template file name
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*/
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Public function display ($ fileName ){
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$ This-> fileName = $ fileName;
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If (file_exists ($ this-> templateDir. '/'. $ this-> fileName )){
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$ CompileFileName = $ this-> templateCompileDir. '/'. $ this-> file_safe_name (). '. php ';
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If (! File_exists ($ compileFileName) | filemtime ($ compileFileName) <filemtime ($ this-> templateDir. '/'. $ this-> fileName )){
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$ This-> del_old_file ();
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$ This-> compile ();
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}
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Extract ($ this-> templateVar );
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Include $ compileFileName;
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} Else {
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$ This-> error ('Sorry, the template file'. $ this-> fileName. 'does not exist !! ');
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}
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}
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/**
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* Get the compilation file name
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*/
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Private function get_compile_file (){
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$ CompileFile = explode ('.', $ this-> fileName );
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Unset ($ compileFile [count ($ compileFile)-1]);
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Return implode ('.', $ compileFile );
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}
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/**
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* Compile
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*/
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Private function compile (){
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$ FileHandle = @ fopen ($ this-> templateDir. '/'. $ this-> fileName, 'R ');
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While (! Feof ($ fileHandle )){
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$ FileContent = fread ($ fileHandle, 1024 );
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}
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Fclose ($ fileHandle );
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$ FileContent = $ this-> template_replace ($ fileContent );
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// $ CompileFile = $ this-> get_compile_file ($ fileName );
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$ FileHandle = @ fopen ($ this-> templateCompileDir. '/'. $ this-> file_safe_name (). '. php', 'w ');
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If ($ fileHandle ){
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Fwrite ($ fileHandle, $ fileContent );
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Fclose ($ fileHandle );
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} Else {
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$ This-> error ('Sorry, Compile dir can not write! ');
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}
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}
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/**
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* Pass the template value
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* @ Param string $ variable name used in the valueName Template
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* @ Param $ value variable value
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*/
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Public function assign ($ valueName, $ value ){
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$ This-> templateVar [$ valueName] = $ value;
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}
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/**
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* Template Regular Expression replacement
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* @ Param string $ content replace content
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* <A href = "http://my.oschina.net/u/556800" target = "_ blank" rel = "nofollow"> @ return </a> string replaced content
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*/
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Private function template_replace ($ content ){
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$ OrginArray = array (
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'/<! -- Loop \ s + \ $ (\ w +) -->/s ',
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'/<! -- Loop \ s + \ $ (\ w +) -->/s ',
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'/<! -- Elseloop --> (. + ?) <! -- Endloop -->/s ',
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'/<! -- Endloop -->/s ',
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'/<! -- If \ s + \ (. + ?) \) -->/S ',
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'/<! -- Endif -->/s ',
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'/<! -- Elseif \ s + \ (. + ?) \) -->/S ',
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'/<! -- Else -->/s ',
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'/\ {P :(. + ?) \:}/S ',
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'/\ {C :( \ w +) \}/s ',
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'/\ {I :(. + ?) \}/S ',
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'/\ {F :(. + ?) \}/S ',
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'/\ {EF :(. + ?) \}/S ',
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'/\ {([A-zA-Z0-9 _ \ [\] \' \ "\ $ \. \ x7f-\ xff] +) \}/s ',
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);
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$ ChangeArray = array (
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'<? Php if (! Empty ($1) & is_array ($1) {$ countLoop = 1; foreach ($1 as $2) {$ countLoop ++;?> ',
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'<? Php if (! Empty ($1) & is_array ($1) {$ countLoop = 1; foreach ($1 as $2 =>$ $3) {$ countLoop ++;?> ',
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'<? Php} if (! Empty ($ countLoop) $ countLoop --;} else {?> $1 <? Php }?> ',
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'<? Php} if (! Empty ($ countLoop) $ countLoop -- ;}?> ',
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'<? Php if ($1) {?> ',
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'<? Php }?> ',
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'<? Php} elseif ($1) {?> ',
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'<? Php} else {?> ',
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'<? Php $1?> ',
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'<? Php echo $1;?> ',
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'<? Php include_once "'. $ this-> templateDir.'/$1";?> ',
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'<? Php $1;?> ',
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'<? Php echo $1;?> ',
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'<? Php echo $1;?> ',
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);
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Return $ repContent = preg_replace ($ orginArray, $ changeArray, $ content );
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}
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/**
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* Delete an old file
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*/
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Private function del_old_file (){
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$ CompileFile = $ this-> get_compile_file ($ this-> fileName );
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$ Files = glob ($ this-> templateCompileDir. '/'. $ compileFile. '*. php ');
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// Print_r ($ files );
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If ($ files ){
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@ Unlink ($ files [0]);
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}
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}
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/**
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* Secure solution for compiling file names
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* <A href = "http://my.oschina.net/u/556800" target = "_ blank" rel = "nofollow"> @ return </a> string returns the compiled file name
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*/
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Private function file_safe_name (){
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$ CompileFile = $ this-> get_compile_file ($ this-> fileName );
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Return $ compileFile. filemtime ($ this-> templateDir. '/'. $ this-> fileName );
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}
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/**
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* Error output function
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* @ Param string $ content error output information
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*/
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Private function error ($ content ){
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$ StringHtml = '<div style = "width: 780px; height: auto; padding: 10px; border: 1px solid # CCC; margin: 0 auto;"> ';
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$ StringHtml. = 'error information: <br/> ';
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$ StringHtml. = '<font color = "red"> ';
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$ StringHtml. = $ content;
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$ StringHtml. = '</font> ';
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$ StringHtml. = '</div> ';
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Exit ($ stringHtml );
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}
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}
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?>
Index. php

View sourceprint?
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<? Php
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/**
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* @ Author Jiawei
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*/
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Include_once 'jtemplate/JTemplate. class. php ';
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$ Template = new JTemplate ('template', 'compile ');
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$ A = array ('A', 'B', 'C', 'D ');
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Define ('_ CORE _', 'aaa ');
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$ Template-> assign ('A', $ );
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$ Template-> display('index.html ');
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?>
Author: Yuan Jiawei