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| <?php
function smarty_keywords( $string ) {
if( is_array( $string ) ) $string = implode( ' ', $string );
$string = preg_replace( '/[^a-zA-Z0-9öäüÖÄÜß]/', ' ', $string );
$arr = explode( ' ', $string );
foreach( $arr as $val ) {
if( strlen( $val ) > 2 ) $tmp[$val]++;
}
arsort( $tmp );
$tmp = array_keys( $tmp );
if( count( $tmp ) > 0 ) {
$string = mb_strtolower( implode( ', ', $tmp ) );
return trim( $string );
}
}
$test = "One of Smartys - primary - design goals is to facilitate the 'separation' of application (code) from presentation.";
echo smarty_keywords( $test );
#$smarty->register_modifier( 'keywords', 'smarty_keywords' );
?>
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