[RESOLVED] Explode every 2nd occurrence

talkster5

Hi,
I am trying to split a string up however I only want to split it on every 2nd occurrence of a semi-colon.

For example
This; Is; A; Test; Message; Example

Would return:
This; Is
A; Test;
Message; Example

Any help/guidance you can offer is appreciated. Thanks.

talkster5

Resolution:

                  

$str= 'This; Is; A; Test; Message; Example';
$temp =explode(';',$str);
$count =count($temp);
for($i=0;$i<$count;$i++)
{
echo $temp[$i].';',$temp[$i+1];
echo '<br/>';
$i++;
                  }

bradgrafelman

talkster5;10955487 wrote:

Resolution:

                  

$str= 'This; Is; A; Test; Message; Example';
$temp =explode(';',$str);
$count =count($temp);
for($i=0;$i<$count;$i++)
{
echo $temp[$i].';',$temp[$i+1];
echo '<br/>';
$i++;
                  }

Sure, but try that with a string that doesn't have an even number of words (e.g. remove "; Example" from your string above).

A slightly improved version might look like:

$str = 'This; Is; A; Test; Message'; 
$temp = explode(';',$str); 
$count = count($temp);

for($i = 0; $i < $count; $i += 2) 
{ 
  echo $temp[$i] . (($i+1) < $count ? ';' . $temp[$i+1] : '') . '<br/>';
}

Weedpacket

Or, if you want to put the pairs in an array instead of displaying them immediately,

$str = 'This; Is; A; Test; Message.';
$chunks = array_chunk(explode(';', $str), 2);
foreach($chunks as &$chunk)
{
    $chunk = join(';', $chunk);
}
unset($chunk);
// print_r($chunks);

With a callback (possibly an anonymous function), the foreach could be made into an array_map():

$chunks = array_map(function($chunk)
{
    return join(';', $chunk);
}, $chunks);

It wouldn't necessarily be easier to read though, and it will run in exactly the same way; but you don't need to remember to unset the loop's index variable afterwards (a common gotcha).