$a=range(10000) refcount 1
$b=&$a ref (refcount=2) val(refcount=1)
$a1=$a ref(refcount=2) val(refcount=2)
unset($a) ref(refcount=1) val(refcount=2)
unset($b) ref (refcount =0 delete) val(refcount = 1)
unset($a1) val(refcount=0 回收内存 zend_string)
本文共 292 字，大约阅读时间需要 1 分钟。
$a=range(10000) refcount 1
$b=&$a ref (refcount=2) val(refcount=1)
$a1=$a ref(refcount=2) val(refcount=2)
unset($a) ref(refcount=1) val(refcount=2)
unset($b) ref (refcount =0 delete) val(refcount = 1)
unset($a1) val(refcount=0 回收内存 zend_string)
转载于:https://www.cnblogs.com/taek/p/6664947.html