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php getheaders的有关问题 (curl也会有这个有关问题)

WBOY
WBOYOriginal
2016-06-13 12:06:051073browse

php getheaders的问题 (curl也会有这个问题)
代码如下

结果如下

为什么有些请求失败了

和服务器有关吗?这个是百度的服务器地址(买的百度关键字,得到的url)

------解决方案--------------------
可能是请求太频繁了
------解决方案--------------------
sleep 久一点呢,实在不行,检查为bool后再次请求一下。

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