empty return preg_split [how]?

Question

i have string like this

$string = '$foo$wow$123$$$ok$';

i want to return empty string and save string in array like this

0 = foo
1 = wow
2 = 123
3 = 
4 =
5 = ok

i use PREG_SPLIT_NO_EMPTY, i know when make PREG_SPLIT_NO_EMPTY return is not empty, but i want any result empty, i want my result save in variable array like in PREG_SPLIT_NO_EMPTY with $chars[$i];

this is my preg_split :

$chars = preg_split('/[\s]*[$][\s]*/', $string, -1, PREG_SPLIT_NO_EMPTY); 

for($i=0;$i<=5;$i++){
     echo $i.' = '.$chars[$i];
}

i want, my result show with looping. no in object loop i want pure this looping:

for($i=0;$i<=5;$i++){
     echo $i.' = '.$chars[$i];
}

to show my result.

how i use this preg_split, thanks for advance...

score 3 · Accepted Answer · edited Jan 15 '13 at 12:00

3

use explode

$str = '$foo$wow$123$$$ok$';
$res = explode ("$",$str);

print_r($res);


Array
(
    [0] => 
    [1] => foo
    [2] => wow
    [3] => 123
    [4] => 
    [5] => 
    [6] => ok
    [7] => 
)

edited Jan 15 '13 at 12:00

Michael Berkowski

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answered Jan 15 '13 at 11:57

Prasanth Bendra

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i want in array variable, and array variable is $chars[$i] with looping – pwcahyo Jan 15 '13 at 11:58
@insomniart Look at the print_r output. From your original code above, I wondered if you knew about [`print_r()`](http://us3.php.net/manual/en/function.print-r.php), `var_dump()`.. – Michael Berkowski Jan 15 '13 at 12:01
If you don't want the empty `[0],[7]` keys, to `trim($str, '$')` – Michael Berkowski Jan 15 '13 at 12:01
i want in echo not print_r – pwcahyo Jan 15 '13 at 12:02
yeah.. because i want make `for($i=0;$i<=4;$i++){ echo $i.' = '.$chars[$i]; }` – pwcahyo Jan 15 '13 at 12:09
try this : foreach($res as $key=>$val){ echo $key.' = '.$val;} – Prasanth Bendra Jan 15 '13 at 12:10
not in object loop, i want pure `for($i=0;$i<=4;$i++){ echo $i.' = '.$chars[$i]; }` because i make many code with this loop. i want no change many code. any solution. – pwcahyo Jan 15 '13 at 12:16
1

for($i=0;$i<=count($res);$i++){ echo $i.' = '.$res[$i]; } – Prasanth Bendra Jan 15 '13 at 12:18
@insomniart So if you want to echo in a loop, then do so. Your question was about how to split the string correctly, which Prasanth has shown you how to do. It is up to you to write your loop appropriately, which you already know how to do. `print_r()` is a debugging and demonstration tool. – Michael Berkowski Jan 15 '13 at 12:28
@PrasanthBendra, excellent, how i trim 0 and the last result ? – pwcahyo Jan 15 '13 at 12:44
@MichaelBerkowski, ok i'm sorry before, – pwcahyo Jan 15 '13 at 12:45
If you want to remove all the null values write this code before your for loop $res = array_flip(array_flip($res)); – Prasanth Bendra Jan 15 '13 at 12:51

score 0 · Answer 2 · answered Jan 15 '13 at 12:12

Using explode adds the empty entrys to the front and the back.

This one matches the tc's expected output:

$str = '$foo$wow$123$$$ok$';
preg_match_all("@(?<=\\$)[^\$]*(?=\\$)@", $str, $res);

echo "<pre>";
print_r($res);
echo "</pre>";

[0] => Array
    (
        [0] => foo
        [1] => wow
        [2] => 123
        [3] => 
        [4] => 
        [5] => ok
    )

empty return preg_split [how]?

2 Answers2