PHP remove commas from numeric strings

In PHP, I have an array of variables that are ALL strings. Some of the values stored are numeric strings with commas.

What I need:

A way to trim the commas from strings, and ONLY do this for numeric strings. This isn't as straightforward as it looks. The main reason is that the following fails:

$a = "1,435";

if(is_numeric($a))
    $a = str_replace(',', '', $a);

This fails because $a = "1435" is numeric. But $a = "1,435" is not numeric. Because some of the strings I get will be regular sentences with commas, I can't run a string replace on every string.

Not tested, but probably something like if(preg_match("/^[0-9,]+$/", $a)) $a = str_replace(...)

Do it the other way around:

$a = "1,435";
$b = str_replace( ',', '', $a );

if( is_numeric( $b ) ) {
    $a = $b;
}

The easiest would be:

$var = intval(preg_replace('/[^\d.]/', '', $var));

or if you need float:

$var = floatval(preg_replace('/[^\d.]/', '', $var));

 function cleanData($a) {

     if(is_numeric($a)) {

     $a = preg_replace('/[^0-9,]/s', '', $a);
     }

     return $a;

}

kaushi

Try this .this worked for me

number_format(1235.369,2,'.','')

if you use number_format like this number_format(1235.369,2) answer will be 1,235.37

but if you use like below

number_format(1235.369,2,'.','') answer will be 1235.37

it's removing the "," of "1,235.37"

If you want to remove commas from numbers inside a string that also contains words, the easiest way I think would be to use preg_replace_callback:

Example:

$str = "Hey hello, I've got 12,500 kudos for you, spend it well"

function cleannr($matches)
{
    return str_replace("," , "" , $matches["nrs"]);
}

$str = preg_replace_callback ("/(?P<nrs>[0-9]+,[0-9]+)/" , "cleannr" , $str);

Output: