Compiler functions are called only during compilation of the template. They are useful for injecting PHP code or time-sensitive static content into the template. If there is both a compiler function and a custom function registered under the same name, the compiler function has precedence.
mixed smarty_compiler_name( |
$tag_arg, | |
$smarty); |
string |
$tag_arg; |
object |
$smarty; |
The compiler function is passed three parameters: the tag argument string - basically, everything from the function name until the ending delimiter, the Smarty and template object. It's supposed to return the PHP code to be injected into the compiled template.
Example 233. A simple compiler function
<?php
/*
* Smarty plugin
* -------------------------------------------------------------
* File: compiler.tplheader.php
* Type: compiler
* Name: tplheader
* Purpose: Output header containing the source file name and
* the time it was compiled.
* -------------------------------------------------------------
*/
function smarty_compiler_tplheader($tag_arg, $smarty)
{
return "\necho '" . $smarty->_current_file . " compiled at " . date('Y-m-d H:M'). "';";
}
?>
This function can be called from the template as:
{* this function gets executed at compile time only *}
{tplheader}
The resulting PHP code in the compiled template would be something like this:
<?php
echo 'index.tpl compiled at 2002-02-20 20:02';
?>
See also
registerPlugin(),
unregisterPlugin().