Online PHP editor | output for CnSh8

<?php $str = '1,"4052","B00K6ED81S",,"Bottle, white - 6,5 l, WENKO","Good design!","Bottle, white 6,5 l, WENKO",,,"item","23",23,"23",23,31.22,31.22,,1,,,,0,8,"4",,0,,0,0,,0,,0,0,0,,'; $pos=1; // set $pos to make sure while loop does not end directly. $newstr = ""; $prevPos = 0; $skip = false; // flag to know if replace should be done or not while($pos != false){ $pos = strpos($str, '"', $prevPos); // find " in string after prevPos $part = substr($str, $prevPos, $pos+1-$prevPos); // substring the part (first time it runs it will be '1,"' then '4052"') if($skip){ // if it's between two " (a string) skip the replace //echo "skip " . $part . "\n"; $skip =!$skip; // change the flag $newstr .= $part; }else{ // if it's not in a string do the replace on the $part //echo "!skip " . $part . "\n"; $newstr .= str_replace(",", ";", $part); $skip =!$skip; // change the flag. } $prevPos = $pos+1; // set new $prevPos } // if the loop ends and there is no more " in the string we need to replace , to ; on the rest of the string. // we know the loop ended at strlen($newstr), so that is the $part. if($pos<strlen($str)) $newstr .= str_replace(",", ";", substr($str, strlen($newstr))); echo $str . "\n"; echo $newstr;