提取小數或整數字符串

Question

如：

$str .= "Additional tax(2.34)"; 
$str .= "Additional tax(3)"; 

誰能幫我提取從字符串的數量。我需要這樣的

Array ([0] => 2.34 [1] => 3); 

Answer 1

陣列格式這應做到：

<?php 
    $str = ''; 
    $str .= "Additional tax(2.34)"; 
    $str .= "Additional tax(3)"; 

    if (preg_match_all('/\((\d+(?:\.\d+)?)\)/', $str, $matches) > 0) { 
     var_dump($matches[1]); 
    } 
?>