How to match all keywords after slash using preg_match and Regex?

Question

here are my possible matching cases

/aaa
/aaa/
/aaa/bbb
/aaa/bbb/
/aaa/bbb/ccc
/aaa/bbb/ccc/

I'm trying to catch aaa, bbb and ccc if available

I know or sure aaa is there, so the regex can be /(aaa)/([^/]*)...

I tried a few other scenarios to catch the rest of the words after slash, non-greedy /([^/]+), /([^/].+?), (/[^/].+?), (?:/(.*)) but they don't match all cases.

Any ideas?

One can test here enter link description here

Answer 1

You can use this regex with all optional matches after first match:

~^/([^/]+)(?:/([^/]+)(?:/([^/]+))?)?/?$~m

RegEx Demo

RegEx Breakup:

• ^/ - Match / at start
• ( - Start captured group #1
  • [^/]+ - Match h1 or more non-slash characters
• ) - End captured group #1
• (?: - Start non-capturing group #1
  • / - Match a literal slash
  • ( - Start captured group #2
    • [^/]+ - Match 1 or more non-slash characters
  • ) - End captured group #2
  • (?: - Start non-capturing group #2
    • / - Match literal /
    • ( - Start captured group #3
      • [^/]+ - Match 1 or more non-slash characters
    • ) - End captured group #3
  • )? - End non-capturing group #2 (optional match)
• )? - End non-capturing group #1 (optional match)
• /? - Match optional trailing / $ - End of input

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EDIT: If you want to match all the components separated by / then you can use:

~(?:^|\G)/([^/\n]+)~m

RegEx Demo 2