Chapter 14. References Explained
Table of Contents
What References Are
What References Do
What References Are Not
Passing by Reference
Returning References
Unsetting References
Spotting References
What References Are
References in PHP are a means to access the same variable
content by different names. They are not like C pointers,
they are symbol table aliases. Note that in PHP, variable
name and variable content are different, so the same content
can have different names. The most close analogy is with Unix
filenames and files - variable names are directory entries,
while variable contents is the file itself. References can
be thought of as hardlinking in Unix filesystem.
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