正则表达式按空格分割但忽略双引号字符串

Question

I know /[\s]+/' splits a string by spaces. I am trying to expand this to ignore any spaces within double quotes. So I want Hello World to be split, but not "Hello World"

preg_split('/[\s]+/', $string) is the expression I am using in PHP.

Answer 1

You can use the PCRE verbs (*SKIP)(*FAIL) to tell the regex to skip specific parts of an expression. So:

".*?"(*SKIP)(*FAIL)|\s+

will skip double quoted strings. Here's a regex101 demo:

https://regex101.com/r/eBP67C/1/

You can read more about this here, http://www.rexegg.com/regex-best-trick.html#pcrevariation.