PHP，使用preg_replace删除双引号内的字符串？

Question

I have a PHP string of the following format:

$str = 'This is a "sample string"';

I want to remove the double quoted string. Like this:

This is a

What I tried:

$fileread = preg_replace('!/\*.*?\*/!s',' -', $fileread);
$fileread = preg_replace('![ \t]*//.*[ \t]*[
]!', '', $fileread);
$separator = preg_replace('/"[^"]+"/','',$fileread);
$separator = explode(" ",$separator);

Is there an easier way to extract that?

Answer 1

You can simply match a string contained inside a double quotes and replace it with an empty string:

$str = 'This is a "sample string".';

$str = preg_replace('/".*"/', '', $str);

echo $str;