Description:
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---
From manual page: http://www.php.net/function.return
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The following description is misleading:

| return returns program control to the calling module. Execution
| resumes at the statement following the called module's invocation.

Consider a compound expression, where return will not cause
execution to resume with the next *statement*, but rather with the
next (not necessarily lexically, but rather in order of evaluation
precedence) *expression*:

  echo my_trim('hello') . my_trim('world');