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[PHP 8.1] Usage of static Variables in Inherited Methods (#1549)

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Sergey Panteleev 2022-04-27 15:49:21 +03:00 committed by GitHub
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language/variables.xml
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@ -485,7 +485,35 @@ function foo(){
]]>
</programlisting>
</example>
</para>
</para>
<para>
As of PHP 8.1.0, when a method using static variables is inherited (but not overridden),
the inherited method will now share static variables with the parent method.
This means that static variables in methods now behave the same way as static properties.
</para>
<example>
<title>Usage of static Variables in Inherited Methods</title>
<programlisting role="php">
<![CDATA[
<?php
class Foo {
public static function counter() {
static $counter = 0;
$counter++;
return $counter;
}
}
class Bar extends Foo {}
var_dump(Foo::counter()); // int(1)
var_dump(Foo::counter()); // int(2)
var_dump(Bar::counter()); // int(3), prior to PHP 8.1.0 int(1)
var_dump(Bar::counter()); // int(4), prior to PHP 8.1.0 int(2)
?>
]]>
</programlisting>
</example>
<note>
<para>