标签中的字符串替换

Question

这是我从数组字段获取的字符串：

[email_content] => 

Dear {NAME},

{USR}Thank You For Connecting With "Company" .Your Username is {$username}.{/USR}



{PWD}Thank You For Connecting With "Company".Please Click on the below Link to Resest Yor Password.{/PWD}
 {$password_link}

Thanks & Regards
ABCD Team.

有时我只想省略整个字符串的{USR}和{/ USR}标记，并将其中的内容保持不变，有时我想要替换{USR}和{/ USR}中的整个内容，包括打开和关闭{USR}标签，保持其他字符串内容不变。

我尝试了很多字符串函数，但它只是让我的编码很冗长。

Answer 1

怎么样：

$replacement = '$0';
if ($remove_tag_only) {
    $replacement = '$1';
} else if ($remove_all) {
    $replacement = '';
}
$string = preg_replace('~\{USR\}(.+?)\{/USR\}~s', $replacement, $string);