Special warning about wb_poke()

This function provides access to the Windows API and should be used with great care. This function can easily generate a runtime exception or freeze the PHP application. Worse, if you are using Windows 98 or Me, it is not unlikely to crash the whole system when calling this function. For this reason Windows 98 or Windows Me are not recommended for developing WinBinder applications. Always be careful and double-check your source code before running it when using this function.

An empty string

Any

Does nothing

A PHP string

Empty or zero

Affects strlen(contents) bytes

A PHP string shorter than length

Greater than zero

Affects strlen(contents) bytes

A PHP string equal or larger than length

Greater than zero

Affects length bytes

// Change characters in a string

$str = "Test string";
$addr = wb_get_address($str);
echo wb_peek($addr) . "\n";
wb_poke($addr, "Roo");
echo wb_peek($addr) . "\n";
echo "$str\n\n";

// Change the value of an integer

$num = 1234;
$addr = wb_get_address($num);
$array = (unpack("Vnum", wb_peek($addr, 4)));
echo "{$array['num']}\n";
wb_poke($addr, pack("V", 800), 4);
$array = (unpack("Vnum", wb_peek($addr, 4)));
echo "{$array['num']}\n";
echo "$num\n\n";