Overloaded Methods

- The returned object is an overloaded object, which means that PHP does

not see any fixed methods as it does with regular classes; instead, any

property or method accesses are passed through to COM.

- Starting with PHP 5, PHP will automatically detect methods that accept

parameters by reference, and will automatically convert regular PHP

variables to a form that can be passed by reference. This means that you

can call the method very naturally; you needn't go to any extra effort in

your code.

- In PHP 4, to pass parameters by reference you need to create an instance

of the VARIANT class to wrap the

byref parameters.

Pseudo Methods

- In PHP versions prior to 5, a number of not very pleasant hacks meant that

the following method names were not passed through to COM and were handled

directly by PHP. PHP 5 eliminates these things; read the details below to

determine how to fix your scripts. These magic method names are case

insensitive.

void COM::AddRef (void)

Artificially adds a reference count to the COM object.

Artificially removes a reference count from the COM object.

Pseudo Methods for Iterating

- These pseudo methods are only available if

com_isenum() returns TRUE, in which case, they hide

any methods with the same names that might otherwise be provided by the

COM object. These methods have all been eliminated in PHP 5, and you

should use Разд. For Each в Ссылка XII, COM and.Net (Windows) instead.

variant COM::All (void)

Returns a variant representing a SafeArray that has 10 elements;

each element will be an empty/null variant. This function was supposed to

return an array containing all the elements from the iterator, but was

never completed. Do not use.

variant COM::Next (void)

Returns a variant representing the next element available from

the iterator, or FALSE when there are no more elements.

variant COM::Prev (void)

Returns a variant representing the previous element available from

the iterator, or FALSE when there are no more elements.

void COM::Reset (void)

Rewinds the iterator back to the start.

COM examples

-

Пример 1. COM example (1) <?php // starting word $word = new COM("word.application") or die("Unable to instantiate Word"); echo "Loaded Word, version {$word->Version}\n"; //bring it to front $word->Visible = 1; //open an empty document $word->Documents->Add(); //do some weird stuff $word->Selection->TypeText("This is a test..."); $word->Documents[1]->SaveAs("Useless test.doc"); //closing word $word->Quit(); //free the object $word = null; ?>

-

Пример 2. COM example (2) <?php $conn = new COM("ADODB.Connection") or die("Cannot start ADO"); $conn->Open("Provider=SQLOLEDB; Data Source=localhost; Initial Catalog=database; User ID=user; Password=password"); $rs = $conn->Execute("SELECT * FROM sometable"); // Recordset $num_columns = $rs->Fields->Count(); echo $num_columns . "\n"; for ($i=0; $i < $num_columns; $i++) { $fld[$i] = $rs->Fields($i); } $rowcount = 0; while (!$rs->EOF) { for ($i=0; $i < $num_columns; $i++) { echo $fld[$i]->value . "\t"; } echo "\n"; $rowcount++; // increments rowcount $rs->MoveNext(); } $rs->Close(); $conn->Close(); $rs = null; $conn = null; ?>

Пред.

Начало

След.

COM and.Net (Windows)

Уровень выше

DOTNET 22222