I want to explode a variable in a little different way

Question

I have this variable.

$var = \"A,B,C,D,\'1,2,3,4,5,6\',E,F\";

I want to explode it so that I get the following array.

array(
[0         


        

Answer 1

Simply use preg_match_all with the following regex as follows

preg_match_all("/(?<=').*(?=')|\w+/",$var,$m);
print_r($m[0]);

Regex Explanation :

• (?<=').*(?=') Capture each and every character within '(quotes)
• |\w+ |(OR) Will grab rest of the characters except ,

Demo

Regex

Answer 2

Although preg_split along with array_map is working very good, see below an example using explode and trim

$var = "A,B,C,D,'1,2,3,4,5,6',E,F";

$a = explode("'",$var);

//print_r($a);
/*
outputs
Array
(
    [0] => A,B,C,D,
    [1] => 1,2,3,4,5,6
    [2] => ,E,F
)
*/
$firstPart = explode(',',trim($a[0],',')); //take out the trailing comma
/*
print_r($firstPart);
outputs
Array
(
    [0] => A
    [1] => B
    [2] => C
    [3] => D
)
*/
$secondPart = array($a[1]);

$thirdPart = explode(',',trim($a[2],',')); //tale out the leading comma
/*
print_r($thirdPart);
Array
(
    [0] => E
    [1] => F
)
*/

$fullArray = array_merge($firstPart,$secondPart,$thirdPart);
print_r($fullArray);
/*
ouputs
Array
(
    [0] => A
    [1] => B
    [2] => C
    [3] => D
    [4] => 1,2,3,4,5,6
    [5] => E
    [6] => F
)
*/

Answer 3

$var = "A,B,C,D,'1,2,3,4,5,6',E,F";

$arr = preg_split("/(,)(?=(?:[^']|'[^']*')*$)/",$var);
foreach ($arr as $data) {
    $requiredData[] = str_replace("'","",$data);
}
echo '<pre>';
print_r($requiredData);

Description : Regular Exp. :-

(?<=').*(?=') => Used to get all characters within single quotes(' '),

|\w+ |(OR) => Used to get rest of characters excepted comma(,) 

Then Within foreach loop i'm replacing single quote

Answer 4

You need to explode the string to array.

But, you need commas after every element except last one.

Here is working example:

<?php
$var = "A,B,C,D,'1,2,3,4,5,6',E,F";
$arr = explode("'", $var);
$num = ! empty($arr[1]) ? str_replace(',', '_', $arr[1]) : '';
$nt = $arr[0] . $num . $arr[2]; 
$nt = explode(',', $nt);
$len = count($nt);
$na = array();
$cnt = 0;
foreach ($nt as $v) {
    $v = str_replace('_', ',', $v);
    $v .= ($cnt != $len - 1) ? ',' : '';
    $na[] = $v;
    ++$cnt; 
}

Demo

Answer 5

There is an existing function that can parse your comma-separated string. The function is str_getcsv

It's signature is like so:

array str_getcsv ( string $input [, string $delimiter = "," [, string $enclosure = '"' [, string $escape = "\\" ]]] )

Your only change would be to change the 3rd variable, the enclosure, to single quotes rather than the default double quotes.

Here is a sample.

$var = "A,B,C,D,'1,2,3,4,5,6',E,F";
$array = str_getcsv($var,',',"'");

If you var_dump the array, you'll get the format you wanted:

array(7) {
  [0]=>
  string(1) "A"
  [1]=>
  string(1) "B"
  [2]=>
  string(1) "C"
  [3]=>
  string(1) "D"
  [4]=>
  string(11) "1,2,3,4,5,6"
  [5]=>
  string(1) "E"
  [6]=>
  string(1) "F"
}