Does the text "Freew3c", start with "Fr"?:
This method returns 1 if there is a match, otherwise 0.
The matches were found here:
(The match was replaced by a # character)
文本“Freew3c”是否以“Fr”开头?
如果匹配成功,此方法返回 1,否则返回 0。
匹配项在此处找到
(匹配项已被 # 字符替换)