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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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Chapter 21. 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; instead, 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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Another Useful functions:


zendapi-reference | reference.pcre.pattern.syntax | reference.pcre.pattern.modifiers | language.references.whatdo | language.references.unset | language.references.spot | language.references.return | language.references.pass | language.references | language.references.arent | function.mb-preferred-mime-name | function.ldap-parse-reference | function.ldap-next-reference | function.ldap-first-reference | function.domdocument-create-entity-reference | function.dom-domentityreference-construct | function.dom-domdocument-createentityreference | function.cpdf-set-viewer-preferences |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.