(PHP 4 >= 4.2.0, PHP 5, PHP 7)
is_infinite — 锟叫讹拷锟角凤拷为锟斤拷锟斤拷值
$val
) : bool
锟斤拷锟� val
为锟斤拷锟斤拷锟斤拷锟斤拷幕蚋旱模锟斤拷锟斤拷锟斤拷锟� log(0)
锟侥斤拷锟斤拷锟斤拷锟斤拷魏纬锟斤拷锟斤拷锟狡教拷母锟斤拷锟斤拷锟斤拷锟轿э拷锟街碉拷锟斤拷蚍祷锟� TRUE锟斤拷
val要锟斤拷锟斤拷值
锟斤拷锟� val
为锟斤拷锟斤拷蠓祷锟� TRUE锟斤拷锟斤拷锟津返伙拷 FALSE锟斤拷