- Table of Contents
- What References Are
- What References Do
- What References Are Not
- Passing by Reference
- Returning References
- Unsetting References
- Spotting References
References are a means in PHP 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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