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Split comma separated string but only comma separated

Hello i have a long line

0BV,0BW,100,102,108,112,146,163191,192,193,1D94,19339,1A1,1AA,1AE,1AFD,1AG,1AKF.......

I want to show it on the page by adding them

as

0BV,0BW,100,102,108,112,146
163191,192,193,1D94,19339
1A1,1AA,1AE,1AFD,1AG,1AKF

I want to create substrings from a 100 character long string, but if the 100th character is not a comma, I want to check for the next comma in the string and split by it.

I tried to use chunk()

to split by word count, but since the length of the substring is different, it is displayed on the page

$db_ocode   = $row["option_code"];

$exclude_options_array =    explode(",",$row["option_code"]);
$exclude_options_chunk_array = array_chunk($exclude_options_array,25);

$exclude_options_string = '';   
foreach($exclude_options_chunk_array as $exclude_options_chunk)
{
    $exclude_options_string .= implode(",",$exclude_options_chunk);
    $exclude_options_string .= "</br>";
}

Please, help. thank you in advance

+3


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4 answers


Take a string, set the cutoff position. If this position does not contain a comma, then find the first comma after that position and cut it off. Plain

<?php

$string="0BV,0BW,100,102,108,112,146,163191,192,193,1D94,19339,1A1,1AA,1AE,1AFD";

$cutoff=30;
if($string[$cutoff]!=",")
  $cutoff=strpos($string,",",$cutoff);
echo substr($string,0,$cutoff);


Fiddle

+3


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(.{99})(?=,),|([^,]*),

Instead of splitting, you can grab grips that are very lightweight. See demo for 20

symbols.



https://regex101.com/r/sH8aR8/37

+2


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Using Hanky ​​Panky's answer I was able to provide a complete solution to my problem, many thanks to Hanky ​​panky. If my code is not efficient, please edit it.

$string="0BV,0BW,100,102,108,112,146,163191,192,193,1D94,19339,1A1,1AA,1AE,1AFD";

for($start=0;$start<strlen($string);) {

       $cutoff=30;
       if(isset($string[$start+$cutoff]) && $string[$start+$cutoff]!=",") 
       {
          $cutoff=strpos($string,",",$start+$cutoff);        
       }
       else if(($start+$cutoff) >= strlen($string))
       {
          $cutoff = strlen($string);
       }
       else if($start >= 30)
       {
          $cutoff = $start + $cutoff;
       }

       echo substr($string,$start,$cutoff-$start)."\n";
       $start=$cutoff+1;
    }
+1


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In case of python

ln=0
i=1
str='0BVAa,0BW,100,102,108,112,146,163191,192,193,1D94,19339,1A1,1AA,1AE,1AFD,1AG,1AKF'
for item in str:
    print (item),
    ln=ln+len(item)
    if ln/10>=i and item==',':
        print ""
        i=i+1
0


source






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