如何将字符串"9"转换为9？

Question

我知道我可以使用switch()来做到这一点,但我仍然想知道是否有任何PHP函数.

Answer 1

从一到十:

$numbers = array("zero" => 0, "one" => 1, "two" => 2, "three" => 3, "four" => 4, 
                 "five" => 5, "six" => 6,  "seven" => 7, "eight" => 8, 
                 "nine" => 9, "ten" => 10);

echo $numbers["nine"]; // 9 

除此之外,它变得更加棘手(当然,除非你想输入一个非常大的列表.)