如果在php中字符串的0和最后一个索引处可用，如何删除卷曲引号？

如果在php中字符串的0和最后一个索引处可用，如何删除$checkChar值

条件不适用于卷引号

我正在尝试这个

$checkArr = ['"', '“', '”'];
$str['quote'] = "“This is a sample text.”";

foreach ($checkArr as $key){
  if($str['quote'][0] === $key || $str['quote'][strlen($str['quote']) - 1] === $key {
    $str['quote'] = str_replace($key, '', $str['quote']);
  }
}

您可以使用删除字符串外部的引号：

$checkArr = ['"', '“', '”'];
$str['quote'] = "“This is a sample text.”";

echo trim($str['quote'], implode('', $checkArr));

输出：

This is a sample text.

This is a sample text.

注意

如果字符串外部有多个引号，它们都将被删除，例如

$checkArr = ['"', '“', '”'];
$str['quote'] = "““This is a sample text.””";

echo trim($str['quote'], implode('', $checkArr));

输出：

This is a sample text.

This is a sample text.

您可以使用删除字符串外部的引号：

$checkArr = ['"', '“', '”'];
$str['quote'] = "“This is a sample text.”";

echo trim($str['quote'], implode('', $checkArr));

输出：

This is a sample text.

This is a sample text.

注意

如果字符串外部有多个引号，它们都将被删除，例如

$checkArr = ['"', '“', '”'];
$str['quote'] = "““This is a sample text.””";

echo trim($str['quote'], implode('', $checkArr));

输出：

This is a sample text.

This is a sample text.

---

ltrim

和

rtrim

是否合适？

ltrim

和

rtrim

是否合适？