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72 lines
2.4 KiB
Plaintext
72 lines
2.4 KiB
Plaintext
This is the new php5 COM module.
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It is not 100% backwards compatible with PHP 4 ext/com, but you should not miss
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the "features" that have not been retained.
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This module exposes 3 classes: variant, com and dotnet(*).
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com and dotnet classes are descendants of the variant class; the only
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difference between the three are their constructors. Once instantiated, the
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module doesn't make a distinction between them.
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COM errrors are mapped to exceptions; you should protect your COM code using
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the try..catch construct if you want to be able to handle error conditions.
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Be warned that due to the way the ZE2 currently works, exceptions are only
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"armed" at the time they are detected, but do not "detonate" until the end of
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the statement. So, code like this:
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$obj->foo[43]->bar();
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Where the foo[43] access triggers an exception will continue to call the bar()
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method on a null object and cause a fatal php error.
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Default properties and array access:
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$obj = new COM("...");
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$obj[1]->foo();
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The code above will use the type information for the object to determine its
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default property and then access it. In PHP 4, it was hard-coded to use the
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"Items" member, which was wrong.
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The default property will also be used by the casting support to determine the
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value for the object.
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Variants:
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This implementation of COM takes a simpler approach than the PHP 4 version;
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we only map a few native types to COM and vice-versa, leaving the more complex
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things as variants. This allows greater consistency of data when passing
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parameters to and from COM objects (no data will be lost). In addition, a
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large number of the variant API has been mapped to PHP space so that you can
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use it for working with the special variant decimal, currency and date time
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types. This could be used as a replacement for the bcmath extension, for
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example.
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You can use the new object casting hook to for a php-native representation of
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a variant object:
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$a = new variant(4);
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$b = new variant(6);
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$c = variant_add($a, $b);
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echo $c; // outputs 10 as a string, instead of Object
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Sample Script:
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<?php
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$word = new COM("word.application");
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print "Loaded Word, version {$word->Version}\n";
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$word->Visible = 1;
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$word->Documents->Add();
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$word->Selection->TypeText("This is a test...");
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$word->Documents[1]->SaveAs("Useless test.doc");
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$word->Quit();
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?>
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TODO:
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- documentation
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* dotnet support requires that you have the mscoree.h header from the .net sdk
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when you build the module.
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