PHP預浸比賽 - 正則表達式與浮點值

Question

有這樣的字符串：

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

我需要走出去30.5和120.8用正則表達式。任何幫助？ 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。

輸出

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

---

更新

也爲17.5x17.5工作？

這是其中一個會...

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

Ideone。

Answer 3

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

，並使用$result[1]和$result[2]

Answer 4

下應該做的伎倆：/^(\d+)x(\d+)/

Running code