Extract a single (unsigned) integer from a string

Answers of > Extract a single (unsigned) integer from a string

A whackier technique which works because w3coded c using there is only 1 numeric value AND the only w3coded c using characters that come before the integer are w3coded c using alphanumeric, colon, or spaces is to use ltrim() w3coded c using with a character mask then cast the remaining w3coded c using string as an integer., w3coded c using w3coded c using This answer appears to w3coded c using be answering a different question. The OP is w3coded c using only isolating one integer value from the string w3coded c using -- a number of items in a shopping cart. The w3coded c using understood scope of this page seems to have w3coded c using blown far out from what the OP has actually w3coded c using asked. This is the correct answer to a w3coded c using different question. w3coded c using – mickmackusa w3coded c using Nov 21 '20 at 13:05 w3coded c using ,This script creates a file at first , write w3coded c using numbers to a line and changes to a next line if w3coded c using gets a character other than number. At last, w3coded c using again it sorts out the numbers to a list.,The w3coded c using first argument in implode in this specific case w3coded c using says "separate each element in matches[0] with a w3coded c using single space." Implode will not put a space (or w3coded c using whatever your first argument is) before the w3coded c using first number or after the last number.

If you just want to filter everything other than the numbers out, the easiest is to use filter_var:

$str = 'In My Cart : 11 items';
$int = (int) filter_var($str, FILTER_SANITIZE_NUMBER_INT);

$str = 'In My Cart : 11 12 items';
preg_match_all('!\d+!', $str, $matches);
print_r($matches);

preg_replace('/[^0-9]/', '', $string);

Using preg_replace:

$str = '(111) 111-1111';
$str = preg_replace('/\D/', '', $str);
echo $str;

For floating numbers,

preg_match_all('!\d+\.?\d+!', $string ,$match);

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