php - 根据大写字母分隔字符串

Question

比如

wordWordWordWord

分隔成数组

word,Word,Word,Word

正则该怎么写

Answer 1

楼上的正则有够复杂，来个简单的，先替换再切割：

<?php
$str = "wordWordWordWord";
$splitChar = ",";
$formatStr = preg_replace("/([A-Z])/", ",\\1", $str);

$wordList = explode($splitChar, $formatStr);
print_r($wordList);