To create a new object, use the new statement
to instantiate a class:
<?php
class foo
{
function do_foo()
{
echo "Doing foo.";
}
}
$bar = new foo;
$bar->do_foo();
?>
For a full discussion, see the Classes and Objects chapter.
If an object is converted to an object, it is not
modified. If a value of any other type is converted to an
object, a new instance of the stdClass
built-in class is created. If the value was NULL, the new instance will be
empty. An array converts to an object with properties
named by keys and corresponding values. Note that in this case before PHP 7.2.0 numeric keys
have been inaccessible unless iterated.
<?php
$obj = (object) array('1' => 'foo');
var_dump(isset($obj->{'1'})); // outputs 'bool(true)' as of PHP 7.2.0; 'bool(false)' previously
var_dump(key($obj)); // outputs 'string(1) "1"' as of PHP 7.2.0; 'int(1)' previously
?>
For any other value, a member variable named scalar will contain
the value.
<?php
$obj = (object) 'ciao';
echo $obj->scalar; // outputs 'ciao'
?>