在两行之间替换文本
问题描述：
我一直在尝试将两个符号之间的文本替换为preg_replace，但是可惜仍然无法完全正确，因为我得到的是空字符串，这是到目前为止的结果>
I have been trying to get the text between two symbols to be replaced with preg_replace, but alas still not quite getting it right as I get a null output that is empty string, this is what I have so far
$start = '["';
$end = '"]';
$msg = preg_replace('#('.$start.')(.*)('.$end.')#si', '$1 test $3', $row['body']);
所以我要寻找的示例输出将是:
So an example output I am looking for would be:
normal text [everythingheregone] after text
收件人
normal text [test] after text
答
您正在将$ start和$ end定义为数组，但将其用作普通变量.尝试将代码更改为此:
You are defining $start and $end as arrays, but using it as normal variables. Try changing your code to this:
$start = '\[';
$end = '\]';
$msg = preg_replace('#('.$start.')(.*)('.$end.')#si', '$1 test $3', $row['body']);