PHP Simple Template Technology

<?php

/**php Simple Template Technology
* Author: Cow Coax
* qq:455703030
* Statement: I am writing is not authentic, welcome to help me modify the master
* Free to spread, use, but please keep this information
*/

Class FLEA_VIEW_NHH
{
Template Storage Directory
public $viewDir = null;
Cache Storage Directory
public $cacheDir = null;
Whether to filter extra spaces, tabs, carriage returns in the cache
Public $filterCache = true;

Data to be displayed in the template
Private $data = Array ();

Public Function __construct ()
{
$viewConf = (array) flea::getappinf (' Viewconfig ');
if (empty ($viewConf)) {
Flea::loadclass (' Flea_exception_expectedfile ');
__throw (new flea_exception_expectedfile (' config file is not found: '. $viewConf));
}
$this->viewdir = $viewConf [' Viewdir '];
$this->cachedir = $viewConf [' Cachedir '];
$this->filtercache = $viewConf [' Filtercache '];
}

Public function assign ($var, $value)
{
$this->data[$var] = $value;
}

Public function display ($viewName)
{
$view = $this->viewdir. ' /'. $viewName. '. HTML ';
$cache = $this->cachedir. ' /'. $viewName. '. PHP ';
if (!file_exists ($view)) {
Flea::loadclass (' Flea_exception_expectedfile ');
__throw (New Flea_exception_expectedfile (' The view file is not found: '. $view));
}
if (Filemtime ($view) > @filemtime ($cache)) {
$this->parseview ($view, $cache);
}
if (file_exists ($cache)) {
if (!defined (' In_this_view ')) {define (' In_this_view ', TRUE);}
Include ($cache);
} else {
Flea::loadclass (' Flea_exception_expectedfile ');
__throw (' The cache file has not read in correctly: '. $cache));
}
}

Private Function Parseview ($view, $cache = null)
{
/* If the template does not exist, output the error message * *
if (!file_exists ($view)) {
Flea::loadclass (' Flea_exception_expectedfile ');
__throw (New Flea_exception_expectedfile (' The view file is not found: '. $view));
}
/* Read the template content as a string * *
$view = file_get_contents ($view);
/* Replace <!--{}--> with {{}}} *
$view = str_replace (Array (' <!--{', '}--> '), array (' {{'}} '), $view);
* * Clear Note/*
$view = Preg_replace ("/\{\{\*" (. *?) \*\}\}/", ', $view);
/* Analytic assign method introduced variable * *
$view = Preg_replace ('/\$ ([a-za-z0-9_]+)/', ' $this->data[\ ' \\1\ '] ', $view);
/* Machine template Internal definition variable *
$view = Preg_replace ('/\$\[([a-za-z0-9_]+) \]/', ' $\\1 ', $view);
/* Parse {{$var}}} basic variable output label * *
$view = Preg_replace ('/\{\{\s*\$ (. +?) \s*\}\}/', ' echo $\\1;?> ', $view);
/* Parse {include}} label * *
$view = Preg_replace ('/\{\{\s*include\s+ (. +?) \s*\}\}/', ' Include \\1;?> ', $view);
/* Parse {{html}} label * *
$view = Preg_replace ('/\{\{\s*html\s+ (. +?) \s*\}\}/', ' Echo file_get_contents (\\1);?> ', $view);
/* Parse {{code}} label * *
$view = Preg_replace ('/\{\{\s*code\s+ (. +?) \s*\}\}/', ' \\1?> ', $view);
/* Parse {{if}}} label * *
$view = Preg_replace ('/\{\{\s*if\s+ (. +?) \s*\}\}/', ' if (\\1) {?> ', $view);
/* Parse {{ElseIf}}} Label * *
$view = Preg_replace ('/\{\{\s*elseif\s+ (. +?) \s*\}\}/', ' } elseif (\\1) {?> ', $view);
/* Parse {{while}} label * *
$view = Preg_replace ('/\{\{\s*while\s+ (. +?) \s*\}\}/', ' while (\\1) {?> ', $view);
/* Parse {{foreach}} label * *
$view = Preg_replace ('/\{\{\s*foreach\s+ (. +?) \s*\}\}/', ' foreach (\\1) {?> ', $view);
/* Parse {for}} label * *
$view = Preg_replace ('/\{\{\s*for\s+ (. +?) \s*\}\}/', ' for (\\1) {?> ', $view);
/* Parse {ELSE}} label * *
$view = preg_replace ('/\{\{\s*else\s*\}\}/', ';} else {?> ', $view);
/* Parse {{/while}},{{/if}},{{/for}},{{}} Label * *
$view = preg_replace (' #\{\{\s*/[a-z]+\s*\}\}# ', ';}?> ', $view);
/* Recursive resolution of nested child templates * *
if (Preg_match_all) ('/\{\{\s*view\s+ (. +?) \s*\}\}/', $view, $viewsInView)) {
/* Iterate through all the child templates in this template and save the parsing results to an array $views * *
$viewInViews = Array ();
foreach ($viewsInView [1] as $viewInView) {
$viewInViews [] = $this->parseview (eval (' return '. $viewInView. '; '));
}
/* Replace the label of all the child templates in the template with their corresponding parsing results.
$view = Str_replace ($viewsInView [0], $viewInViews, $view);
}
* * Merge adjacent label Resolution results
$view = preg_replace ('/\?>\s*<\?/', ', ', $view);
/* If the cache filter is turned on, then filter out the extra space, Tab, enter * *
if ($this->filtercache = = True) {
$view = preg_replace ('/\s+/', ', ', $view);
}
/* If you are parsing a child template, return the result of the resolution * *
if ($cache = = null) {return $view;}
/* Add code to prevent direct access to cache * *
$view = ';? if (!defined ("In_this_view")) Exit ("The page is not found!"); ?> '. $view;
/* Write template resolution results to the cached file * *
@file_put_contents ($cache, $view);
}
}

/**
* One, configuration
* Configuration file Please modify in the Flea configuration file
* Format is:
* ' Viewconfig ' => Array (
* ' Viewdir ' => ',//template file path
* ' Cachedir ' => ',//cache file path
* ' Filtercache ' => true,//whether the cache is optimized after the template has been parsed
* );
*
* Second, the label
* template file suffix named. html
* The label supports both <!--{}--> or {{}}}, you can use it freely according to the situation
* 1, {{* * *}} To add comments, only support single line, multiline do not know how to write, depressed
* 2, {{$ABC}} output a variable, formatted output of the variable use the <{code}> tag to perform a function to format the output
* 3, {{$[ABC]}} output a variable defined inside a template, with the variable name enclosed in brackets
* 4, {include ' abc/bcd.php '}} contains a dynamic file in which you can use variables and templates that are defined internally by the Assign method, but you cannot use the tags supported by this engine
* 5, {{{html ' abc/bcd.html '}} contains a static file, which is available only under PHP5, and contains no variables or labels that can be used in files that are several times the performance of the include tag
* 6, {{code echo substr ($ABC, 1)}} executes a section of PHP code, including assignment, function, etc.
* 7, {{if $abc ==1}} and {{ElseIf $abc ==2}} and {{/if}}}, Branch
* 8, {{while $abc <1000}} and {{/while}}} while loop
* 9, {{for $i =0; $i <1000; $i + +}} and {{/for}}} for loop
* 10, {{foreach $abc as $k => $v}} and {{/foreach}} a Foreach Loop
* 11, {view ' abc/bcd.html '}} nested another template, support the infinite nesting of templates
*
Attention
* 1,include,html,view tags you can use constants to specify the path, which is more convenient
* The variable introduced by 2,assign takes a different namespace than the variables defined inside the template, so it can be duplicate
* 3, for the while,foreach,for loop need to introduce variables, it is best to use the template defined within the variable
* 4, template internal definition variable {{code $[i]=1}}}
* 5, all tags can not contain {} curly braces, or can not correctly parse
* 6, all the label parameters must be written as a single line, otherwise it will not parse correctly
* 7, when debugging, in order to facilitate the viewing of the results of the cache can turn off caching optimization, when published, recommended to open, to improve performance
* 8, this template engine can only be used under the flea, if you want to do not rely on the flea version, please modify
* 9, the parameters in the label using PHP syntax
* 10, the reference and output of the array {{$ABC [' ID ']}}
* 11, all labels are lowercase
* 12, the parameter of the label cannot contain {{or}}, or it will parse the error
*/

?>