$a = 'new string';
$b = 1;
xdebug_debug_zval('a');
xdebug_debug_zval('b');
ouputs with PHP 7.3.12 (cli)
a: (interned, is_ref=0)='new string'
b: (refcount=0, is_ref=0)=1
$a = 'new string';
$b = 1;
xdebug_debug_zval('a');
xdebug_debug_zval('b');
ouputs with PHP 7.3.12 (cli)
a: (interned, is_ref=0)='new string'
b: (refcount=0, is_ref=0)=1