Online PHP editor | refs for mK0Xq

<?php $n = null; // initialise an array with reference set $s = 'some string'; $a[] =& $s; $a[] =& $s; $a[] =& $s; $s =& $n; // so the reference count is clear debug_zval_dump($a); var_dump(apc_store('a', $a)); $a = apc_fetch('a'); // modifiy it $s =& $a[0]; $s = 'other string'; $s = & $n; debug_zval_dump($a);