php - How to test ip response time, can set millisecond timeout?

Question

I want to test the response time of a batch of IPs, similar to the response time of ping, which requires milliseconds.
You can set a millisecond-level timeout. If >500ms, it is considered unqualified and continue to the next test.
Both Python and PHP scripts are acceptable

世界只因有你 · Answer

#coding=utf8
import os
ip_list=['192.168.0.1','192.168.0.2','192.168.0.3','192.168.0.106']
for each in ip_list:
    a=os.popen('ping -n 1 %s'%each).read().decode('gbk')
    b=a.find('=')
    c=a.find('ms')
    time=a[b+7:c]
    try:
        if int(str(time))>=500:
            print 'time >= 500ms'
        else:
            print each+'  :  '+time+'ms'
    except Exception as e:
        print 'lost'

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