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Posted by Ken Robinson on 06/20/06 20:14
Juliette wrote:
> I don't think you can easily do it with regex as you can't really
> differentiate between comma's.
> I would suggest something along the lines of:
>
> $array = explode ( ', ', $string );
> $arraycount = count($array);
> $new_string = '';
>
> for( $i=0; $i<$arraycount; $i++; ) {
> if ((1&$i)) {
> //$i is odd
> $new_string .= $array[$i] . ', ';
> }
> elseif (!(1&$num)) {
> //$i is even
> $new_string .= $array[$i] . '; ';
> }
> }
> $string = $new_string;
> unset($new_string);
I would use temporary arrays and the implode() function, and a switch
statement instead of the if/elseif:
<?php
$string = "Carson, David, Milne, Rebecca, Pakes, Francis J., Shalev,
Karen, Shawyer, Andrea";
$array = explode ( ', ', $string );
$tmp = array();
$tmp2 = array();
for( $i=0; $i<count($array); $i++ ) {
switch ($i % 2) {
case 0:
$tmp2[] = trim($array[$i]);
break;
case 1:
$tmp2[] = trim($array[$i]);
$tmp[] = implode(', ',$tmp2);
$tmp2 = array();
break;
}
}
echo 'Before: ' . $string . "\n";
$string = implode('; ',$tmp);
echo 'After: ' . $string;
?>
Ken
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