搜索字符串（变量匹配）并打印

I want to search for a number in text from DB and print them. Numbers are product codes and vary from 4 to 6 digits.

Example:

aaaaa 1234 aaaa
aaaaa 123456 aaaaa
aaaaa 12345 aaaaa

What I got is an array with exact match of 5 numbers, but not varying and not printing:

$string = $sql['products_description'];
preg_match_all('/(?<![0-9])[0-9]{5}(?![0-9])/', $string, $match);
for ($i=0; $i<10; $i++) {
   echo $match[$i];
   echo '<br>';
}

Any help?

edit: I got this working closely:

$string = $sql['products_description'];
preg_match_all('#\d{4,6}#', $string, $matches);
foreach ($matches as $match) {
  print_r($match);
}

but returns something like:

Array ( [0] => 1234 [1] => 123456 [2] => 12345 )

I need them purely (not in an array) because I have to use each number separately later. In this case, how to extract each element and print it?

SOLUTION:

$var = array();
preg_match_all('#\d{4,6}#', $string, $matches);
foreach ($matches as $match) {
$var[] = $match;
}

for ($i=0; $i<=count($matches[0]); $i++) {
  for ($j=0; $j<=count($matches[0]); $j++) {
    if (($var[$i][$j]) != '') {
      print_r($var[$i][$j]);
      echo '<br>';
    }
  }
}

If you are sure that they are between 4 and 6 long:

$string = $sql['products_description'];
preg_match_all('#\d{4,6}#', $string, $matches);
foreach ($matches as $match) {
  echo $match;
}

I only modified the pattern and the for-loop.

Edit if you want it "purely":

$string = $sql['products_description'];
$var = array();
preg_match_all('#\d{4,6}#', $string, $matches);
foreach ($matches as $match) {
  $var[] = $match;
}

Try this code:

preg_match_all('!\d+!', $str, $matches);
print_r($matches);

Edit:

preg_match_all('/[456]/', $str, $matches);
$var = implode('', $matches[0]);
print_r($var)

     preg_match_all('!\d+!', $str, $matches);
     print_r($matches);
     $digit=$matches[0][0];
     $digit=(int)$digit;
     echo $digit;

You will get ur number this way..

Edit#1

  print_r($matches[0]);
  //Output :
        Array
          (
            [0] => 1234,
            [1] => 123456,
            [2] => 1234


           )
  echo implode("",$matches[0]);
    //Output: 12341234561234

Edit#2

   $var1=$matches[0][0];
   $var2=$matches[0][1];
   $var3=$matches[0][2];