<?php
/**
* Take substring from string containing whole words
* and keep it shorter or equal to a specified length
* If only one word is longer than the limit it will be truncated
*
* @param unknown_type $str
* @param unknown_type $max
* @return unknown
*/
function _substring_words_max($str, $max = ADWORDS_DESCRIPTION) {
if(mb_strlen($str) > $max) {
// the string is over max number of characters
$words = explode(" ", $str);
foreach($words as $wordnr => $word) {
$result .= $word." ";
if (isset($words[($wordnr+1)]) AND (mb_strlen($result) + mb_strlen($words[($wordnr+1)])) > $max) {
break;
}
}
if(mb_strlen($result) > $max) { $result = substr($result, 0, $max); }//even the first word is larger than the limit, truncated
$result = trim($result);
return $result;
}
// if we reach this, the string is below limit
return $str;
}
?>
