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<?php
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/**
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 * Smarty plugin
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 *
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 * @package    Smarty
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 * @subpackage PluginsModifierCompiler
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 */
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/**
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 * Smarty count_words modifier plugin
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 * Type:     modifier
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 * Name:     count_words
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 * Purpose:  count the number of words in a text
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 *
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 * @link   http://www.smarty.net/manual/en/language.modifier.count.words.php count_words (Smarty online manual)
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 * @author Uwe Tews
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 *
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 * @param array $params parameters
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 *
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 * @return string with compiled code
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 */
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function smarty_modifiercompiler_count_words($params)
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{
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    if (Smarty::$_MBSTRING) {
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        // return 'preg_match_all(\'#[\w\pL]+#' . Smarty::$_UTF8_MODIFIER . '\', ' . $params[0] . ', $tmp)';
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        // expression taken from http://de.php.net/manual/en/function.str-word-count.php#85592
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        return 'preg_match_all(\'/\p{L}[\p{L}\p{Mn}\p{Pd}\\\'\x{2019}]*/' . Smarty::$_UTF8_MODIFIER . '\', ' .
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               $params[ 0 ] . ', $tmp)';
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    }
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    // no MBString fallback
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    return 'str_word_count(' . $params[ 0 ] . ')';
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}