I have a string having 128 values in the form of :
1,4,5,6,0,0,1,0,0,5,6,...1,2,3.
I want to pair in the form of :
(1,4),(5,6),(7,8)
so that I can make a for loop for 64 data using PHP.
-
explode on coma. foreach() loop and builduser557846– user5578462013-04-16 04:20:40 +00:00Commented Apr 16, 2013 at 4:20
Add a comment
|
2 Answers
You can accomplish this in these steps:
Use
explode()to turn the string into an array of numbersUse
array_chunk()to form groups of twoUse
array_map()to turn each group into a string with bracketsUse
join()to glue everything back together.
You can use this delicious one-liner, because everyone loves those:
echo join(',', array_map(function($chunk) {
return sprintf('(%d,%d)', $chunk[0], isset($chunk[1]) ? $chunk[1] : '0');
}, array_chunk(explode(',', $array), 2)));
If the last chunk is smaller than two items, it will use '0' as the second value.
7 Comments
Tushar Kanti
for odd values we would receive : (1,2),(3,4), and the last value gets removed. In my code,I am making loop using for and concatenating with comma.
Ja͢ck
@TusharKanti you mentioned there are 128 values, that's not an odd number.
Tushar Kanti
ok my fault for it.sorry but That I just gave it as an example.The function should should work irrespective of how many values is there in the string and return in pair format.
Tushar Kanti
Also,I am getting this Warning error on Wamp Client server : Warning: vsprintf(): Too few arguments in C:\wamp\www\test\explode\test.php on line 12
Ja͢ck
@TusharKanti so the last item should be ignored if the list has an odd number of items?
|
<?php
$a = 'val1,val2,val3,val4';
function x($value)
{
$buffer = explode(',', $value);
$result = array();
while(count($buffer))
{ $result[] = array(array_shift($buffer), array_shift($buffer)); }
return $result;
}
$result = x($a);
var_dump($result);
?>
Shows:
array(2) { [0]=> array(2) { [0]=> string(4) "val1" [1]=> string(4) "val2" } [1]=> array(2) { [0]=> string(4) "val3" [1]=> string(4) "val4" } }
If modify it, then it might help you this way:
<?php
$a = '1,2,3,4';
function x($value)
{
$buffer = explode(',', $value);
$result = array();
while(count($buffer))
{ $result[] = sprintf('(%d,%d)', array_shift($buffer), array_shift($buffer)); }
return implode(',', $result);
}
$result = x($a);
var_dump($result);
?>
Which shows:
string(11) "(1,2),(3,4)"