Smarty Advanced Features filter Usage _php instance

In this paper, the use of filters for Smarty advanced Features is analyzed. Share to everyone for your reference, as follows:

Use of filters in advanced features

1. Pre-Filter

function remove_dw_comments ($tpl _source, & $smarty) {return preg_replace ("/
 
   U", "", $tpl _source);// Remove the annotations in the original TPL file so that they do not display the}//registration pre-filter $smarty->register_prefilter ("Remove_dw_comments") in the compiled file; $smarty->display (" Test1.tpl ");

Test1.tpl

With the use of filters

Formatting of annotations
In this case, the comments are filtered out in the compiled file.

2, after the filter

function Add_header_comment ($tpl _source, & $smarty) {return "<?php echo \"
 
   \n\ "? >\n". $tpl _source; /Add Header comment}//registered filter $smarty->register_postfilter ("Add_header_comment"); $smarty->display (' Test2.tpl ');

Template file:

Test2.tpl

The head will produce comments:

3. Output filter

function Protect_email ($tpl _output, & $smarty) {  $tpl _output = preg_replace ('! \s+) @ ([A-za-z0-9\.\-]+\. ( [A-za-z] {2,3}| [0-9] {1,3}))! ', ' $1%40$2 ', $tpl _output);  return $TPL _output;} Register the Outputfilter$smarty->register_outputfilter ("Protect_email");  $smarty->display ("Index.tpl");} $smarty->register_outputfilter ("Protect_email"); $smarty->display ("Index.tpl");

It is hoped that this article will be helpful to everyone based on smarty template PHP program design.

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