php trim a string

Question

I\'m trying to build a function to trim a string is it\'s too long per my specifications.

Here\'s what I have:

function trim_me($s,$max) 
{
    if (s         


        

Answer 1

I've named the function str_trunc. You can specify strict being TRUE, in which case it will only allow a string of the maximum size and no more, otherwise it will search for the shortest string fitting in the word it was about to finish.

var_dump(str_trunc('How are you today?', 10)); // string(10) "How are..."
var_dump(str_trunc('How are you today? ', 10, FALSE)); // string(14) "How are you..."

// Returns a trunctated version of $str up to $max chars, excluding $trunc.
// $strict = FALSE will allow longer strings to fit the last word.
function str_trunc($str, $max, $strict = TRUE, $trunc = '...') {
    if ( strlen($str) <= $max ) {
        return $str;
    } else {
        if ($strict) {
            return substr( $str, 0, strrposlimit($str, ' ', 0, $max + 1) ) . $trunc;
        } else {
            return substr( $str, 0, strpos($str, ' ', $max) ) . $trunc;
        }
    }
}

// Works like strrpos, but allows a limit
function strrposlimit($haystack, $needle, $offset = 0, $limit = NULL) {
    if ($limit === NULL) {
        return strrpos($haystack, $needle, $offset);
    } else {
        $search = substr($haystack, $offset, $limit);
        return strrpos($search, $needle, 0);
    }
}