PHP 预匹配 - 具有浮点值的正则表达式

Question

have this string:

$var = "30.5x120.8 (test desc here)";

I need to get out 30.5 and 120.8 with a regular expression.. any help?? Thx

Answer 1

preg_match_all('~\d+(?:\.\d+)?~', $string, $matches);
var_dump($matches[0]);

Answer 2

$var = "30x120 (test desc here)";

preg_match_all('/^(\d+)x(\d+)/', $var, $matches);

var_dump($matches)

Ideone .

Output

array(3) {
  [0]=>
  array(1) {
    [0]=>
    string(6) "30x120"
  }
  [1]=>
  array(1) {
    [0]=>
    string(2) "30"
  }
  [2]=>
  array(1) {
    [0]=>
    string(3) "120"
  }
}

---

Update

also work for 17.5x17.5?

Here is one which will...

/^(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)/

Ideone .

Answer 3

preg_match('/^(\d+)x(\d+)/', '30x120 (test desc here)', $result);

and use $result[1] and $result[2]

Answer 4

The following should do the trick: /^(\d+)x(\d+)/

Running code