php-正则表达式匹配问题

Question

I'm using the google translate api for some simple stuff but when translating english to other languages it sometimes gives me spaces between quotes, so can someone give me a regex matching statement in php to replace the space between the quote and first word and the quote and last word?

Example translated phrase: word word word " constructie in Londen " word word word

I would like the regex to convert it to: word word word "constructie in Londen" word word word

Thanks!

Answer 1

This is the pattern: "\\s*(.*?)\\s*"

$str = 'word word word " constructie in Londen " word word word';
$newStr = preg_replace('/"\s*(.*?)\s*"/', '"\\1"', $str);
echo $newStr;
// word word word "constructie in Londen" word word word

This will also work with multiple quoted segments:

$str = 'word word word " constructie in Londen " word word wordword word word " constructie in Londen " word word wordword word word " constructie in Londen " word word word';
$newStr = preg_replace('/"\s*(.*?)\s*"/', '"\\1"', $str);
echo $newStr;
// word word word "constructie in Londen" word word wordword word word "constructie in Londen" word word wordword word word "constructie in Londen" word word word

Or you could use the /e modifier with trim:

$str = 'word word word " constructie in Londen " word word wordword word word " constructie in Londen " word word wordword word word " constructie in Londen " word word word';
$newStr = preg_replace('/"(.*?)"/e', "'\"'.trim('\\1').'\"'", $str);
echo $newStr;
// word word word "constructie in Londen" word word wordword word word "constructie in Londen" word word wordword word word "constructie in Londen" word word word

Edited to use Phil Brown's suggestion.

Edited to use Alan Moore's suggestion.