如何仅在引用的子字符串中用点替换逗号？

Question

假设我有一个字符串:

$string =  'apple, cat, dog, "0,445",symphony, "0,454"';

我想要的输出是:

$string =  'apple, cat, dog, "0.445",symphony, "0.454"';

Answer 1

你可以使用 preg_replace

$string = preg_replace('/("\d+),(\d+")/','$1.$2',$string);