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how to detect search engine bots with php?
...n set the user-agent to what they want, looking for 'Googlebot', 'bingbot' etc is only half the job.
The 2nd part is verifying the client's IP. In the old days this required maintaining IP lists. All the lists you find online are outdated. The top search engines officially support verification thro...
How do I close a single buffer (out of many) in Vim?
...point.. copy and paste a few lines of text to use as a template of sorts.. etc. I would type the following:
:bd txt <Tab>
Note that the matching string does not have to be at the start of the file name.
The above displays the list of file names that match 'txt' at the bottom of the screen...
互联网健身的火爆：技术驱动是内因 资本只是点缀 - 资讯 - 清泛网 - 专注C/...
...候，到底是要抓大放小，还是要抓小放大，这的确是一个问题。资本寒冬到来，很多行业的创业者们都在谋划着过冬的“最佳姿势”。尚未拿到融资的创业者们开始通过各种路演、投资峰会、宣讲会获取资本关注；已经拿到融资...
Pulse Secure解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ure解决方案概述一段时间以来，企业始终在面对接入控制问题。这个需求始自于扩展企业，在此，远程用户常使用未加管理或不可管理的设备接入关键的局域网...概述
一段时间以来，企业始终在面对接入控制问题。这个需求始...
How can I check if a URL exists via PHP?
...returned by get_headers() are well formed.
Use curl (if you can).
Prevent fetching the entire body/content, but only request the headers.
Consider redirecting urls:
Do you want the first code returned?
Or follow all redirects and return the last code?
You might end up with a 200, but it could redire...
为什么说自媒体到了最危险的时期？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...最主要的几点包括盈利模式，与科技自媒体作者的关系等问题。是非对错暂且不论，在这场争论中，不管是支持的，还是反对甚至泼脏水的，各有各的观点。很多人认真的或若有其事的分析着虎嗅的招股书，有人甚至说虎嗅已经...
cleanest way to skip a foreach if array is empty [duplicate]
...anguage. PHP variable can store anything, that's why is_array, is_numeric, etc are needed functions.
– Daniel Wu
Nov 22 '19 at 5:41
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互联网医疗新格局：顶级医生入场 - 资讯 - 清泛网 - 专注C/C++及内核技术
...不到好医生的原因是，互联网问诊多为“头疼脑热”的小问题，最优秀的医生并不愿意花时间。但顶级医生现在也需要一个分诊机制来获得更高质量的患者。
文/温泉
自2013年下半年以来，因一系列政策利好，互联网医疗行业...
“Cannot send session cache limiter - headers already sent” [duplicate]
... do in your PHP file (so put it at the absolute beginning, before all HTML etc).
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How do PHP sessions work? (not “how are they used?”)
...ions in PHP are started by using the session_start( ) function. Like the setcookie( ) function, the session_start( ) function must come before any HTML, including blank lines, on the page. It will look like this:
<?php session_start( );?><html><head>
....... etc
The session_star...