Regular Expression to collect everything after the last /

Question

I\'m new at regular expressions and wonder how to phrase one that collects everything after the last /.

I\'m extracting an ID used by Google\'s GData.

Answer 1

Generally:

/([^/]*)$

The data you want would then be the match of the first group.

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Edit   Since you’re using PHP, you could also use strrchr that’s returning everything from the last occurence of a character in a string up to the end. Or you could use a combination of strrpos and substr, first find the position of the last occurence and then get the substring from that position up to the end. Or explode and array_pop, split the string at the / and get just the last part.

Answer 2

This pattern will not capture the last slash in $0, and it won't match anything if there's no characters after the last slash.

/(?<=\/)([^\/]+)$/

Edit: but it requires lookbehind, not supported by ECMAScript (Javascript, Actionscript), Ruby or a few other flavors. If you are using one of those flavors, you can use:

/\/([^\/]+)$/

But it will capture the last slash in $0.