Difference between revisions of "ObjectsAndRefs"
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===Notes=== | ===Notes=== | ||
{{Reflist}} | {{Reflist}} | ||
Revision as of 22:49, 26 July 2011
This page attempts to provide a visual guide to how objects - and references to them - work in PHP 5.0 and later.
| class SimpleClass { public $var = 'a default value'; } $instance = new SimpleClass(); |
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| The above code creates a new class, SimpleClass, with no properties or methods. It then creates a new instance of this class and attaches it to the variable named '$instance'. Because objects are "special" [1] in PHP5, the relationship between the variable '$instance' and the object inside it is not as direct as you might be expecting... | |
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| $assigned = $instance; | 
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| Explain the sample... | |
| $instance->var = '$assigned will have this value as well'; | 
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| Explain the sample... | |
| $reference =& $instance; | 
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| Explain the sample... | |
| $instance = null; | 
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| Explain the sample... | |
