How can PHP developers ensure compatibility with both PHP4 and PHP5 when using object operators?

To ensure compatibility with both PHP4 and PHP5 when using object operators, developers can use the "->" operator for PHP5 and the "->" operator for PHP4. This way, the code will work seamlessly on both versions of PHP.

// Example code snippet for compatibility with both PHP4 and PHP5
if (version_compare(PHP_VERSION, '5.0.0', '>=')) {
    $object->property = 'value'; // PHP5
} else {
    $object->setProperty('value'); // PHP4
}