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Arrays and Array-style COM properties


Arrays and Array-style COM properties

Many COM objects expose their properties as arrays, or using array-style access. In PHP 4, you may use PHP array syntax to read/write such a property, but only a single dimension is allowed. If you want to read a multi-dimensional property, you could instead make the property access into a function call, with each parameter representing each dimension of the array access, but there is no way to write to such a property.

PHP 5 introduces the following new features to make your life easier:

  • Access multi-dimensional arrays, or COM properties that require multiple parameters using PHP array syntax. You can also write or set properties using this technique.

  • Iterate SafeArrays ("true" arrays) using the foreach control structure. This works because SafeArrays include information about their size. If an array-style property implements IEnumVariant then you can also use foreach for that property too; take a look at For Each for more information on this topic.



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