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php 获取操作系统、浏览器版本信息(持续更新) - 更多技术 - 清泛网 - 专...

...eregi('flashget', $agent)){ $os = 'flashget'; } else if (eregi('webzip', $agent)){ $os = 'webzip'; } else if (eregi('offline', $agent)){ $os = 'offline'; } else { $os = 'Unknown'; } return $os; } 二、获取浏览器信息: /** * 获取浏览器信息 * * @r...
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Detecting 'stealth' web-crawlers

...h were then updated automatically as needed by checking claimed user-agent strings and, if the client claimed to be a legitimate spider but not on the whitelist, it performed DNS/reverse-DNS lookups to verify that the source IP address corresponds to the claimed owner of the bot. As a failsafe, the...
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How to find SQL Server running port?

... GO xp_readerrorlog 0, 1, N'Server is listening on' GO http://www.mssqltips.com/sqlservertip/2495/identify-sql-server-tcp-ip-port-being-used/ share | improve this answer | ...
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Add Keypair to existing EC2 instance

...eating these steps until you have it working. Note: If you had an Elastic IP address assigned to instance A when you stopped it, you’ll need to reassociate it after starting it up again. Remember! If your instance B was temporarily started just for this process, don’t forget to terminate it no...
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How does the socket API accept() function work?

The socket API is the de-facto standard for TCP/IP and UDP/IP communications (that is, networking code as we know it). However, one of its core functions, accept() is a bit magical. ...
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Increasing the maximum number of TCP/IP connections in Linux

... decrease the tcp_fin_timeout To find out the default values: sysctl net.ipv4.ip_local_port_range sysctl net.ipv4.tcp_fin_timeout The ephermal port range defines the maximum number of outbound sockets a host can create from a particular I.P. address. The fin_timeout defines the minimum time thes...
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Enable remote MySQL connection: ERROR 1045 (28000): Access denied for user

... You have to put this as root: GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'IP' IDENTIFIED BY 'PASSWORD' with grant option; ; where IP is the IP you want to allow access, USERNAME is the user you use to connect, and PASSWORD is the relevant password. If you want to allow access from any IP just p...
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How to create a self-signed certificate with OpenSSL

...me = subject req_extensions = req_ext x509_extensions = x509_ext string_mask = utf8only # The Subject DN can be formed using X501 or RFC 4514 (see RFC 4519 for a description). # Its sort of a mashup. For example, RFC 4514 does not provide emailAddress. [ subject ] countryName ...
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How Drupal works? [closed]

...e. The settings.php file is parsed via include_once(), and any variable or string overrides established there are applied. See the “Variable Overrides” and “String Overrides” sections of the file sites/all/default/default.settings.php for details. Early Page Cache In situations requiring a...
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How to get the value from the GET parameters?

... JavaScript itself has nothing built in for handling query string parameters. Code running in a (modern) browser you can use the URL object (which is part of the APIs provided by browsers to JS): var url_string = "http://www.example.com/t.html?a=1&b=3&c=m2-m3-m4-m5"; /...