在PHP之前删除字符串

Question

Is there a way to remove everything before and including the last instance of a dot(.) in a string?

I have these following strings:

1. packageName.appName.moduleName.eventName.pageNameX
2. packageName.appName.moduleName.pageNameY
3. packageName.appName.pageNameZ
4. packageName.pageNameA

And I want to have:

1. pageNameX
2. pageNameY
3. pageNameZ
4. pageNameA

I have tried:

preg_replace('/^.*.\s*/', '', $theString);

but it doesn't work.

Answer 1

substr($str, strrpos($str, '.')+1);

strrpos() will return the position of the last instance of a character in a string. Use that value + 1 as the starting position in substr() to get everything after that.