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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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What References Are Not

As said before, references aren't pointers. That means, the following construct won't do what you expect:

<?php
function foo(&$var)
{
    $var =& $GLOBALS["baz"];
}
foo($bar);
?>

What happens is that $var in foo will be bound with $bar in caller, but then it will be re-bound with $GLOBALS["baz"]. There's no way to bind $bar in the calling scope to something else using the reference mechanism, since $bar is not available in the function foo (it is represented by $var, but $var has only variable contents and not name-to-value binding in the calling symbol table). You can use returning references to reference variables selected by the function.

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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.