How does PHP Disable Internet access?

If you disable Internet access to a PHP file, that is, this php file is only accessible to servers. Because a lot of data needs to be generated by regularly running PHP scripts on scheduled tasks to prevent the Internet or a spider from running this PHP file to generate incorrect data, therefore, you must block the Internet and only allow server access. If you disable Internet access to a PHP file, this PHP file is only accessible to servers.
Because a lot of data needs to be generated by regularly running php scripts on scheduled tasks to prevent the Internet or spider from running this PHP to generate incorrect data, you need to block the Internet and only access the server.

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If you disable Internet access to a PHP file, this PHP file is only accessible to servers.
Because a lot of data needs to be generated by regularly running php scripts on scheduled tasks to prevent the Internet or spider from running this PHP to generate incorrect data, you need to block the Internet and only access the server.

Generally, the Web Server accepts HTTP requests and transfers them to mod_php or php-fpm to execute the PHP program. This means that the Web server can be fully restricted. The restriction Method for Apache server @ iefsou has been provided. I will write a restriction configuration for nginx:

location /uri/path/to/your/script.php {    allow 192.168.0.0/16;    allow 172.16.0.0/12;    allow 10.0.0.0/8;    allow 127.0.0.0/8;    deny all;}

This method can also be used to restrict access by individual IP addresses on the Internet. For details, refer to the nginx access module configuration manual.

Of course, it is not impossible to restrict the IP address in the PHP program. In the same way, determine whether the user's IP address is a lan ip Address:

function is_local_ip($ip_addr = null) {    if (is_null($ip_addr)) {        $ip_addr = $_SERVER['REMOTE_ADDR'];    }    $ip = ip2long($ip_addr);    return $ip & 0xffff0000 == 0xc0a80000 // 192.168.0.0/16        || $ip & 0xfff00000 == 0xac100000 // 172.16.0.0/12        || $ip & 0xff000000 == 0xa0000000 // 10.0.0.0/8        || $ip & 0xff000000 == 0x7f000000 // 127.0.0.0/8    ;}

If you are not from a LANheaderOutput 403 or an error page to show it.

It is worth mentioning that the PHP method will cause the request to be handed over to the PHP interpreter. However, the performance of the PHP interpreter is much worse than that of nginx to directly return 403, you can perform stress testing on your own. Of course, if you are developing a product that you have installed for the customer, do not change the server configurations of inexperienced customers.

Apache Url rewriting can solve this problem.

RewriteCond % {REQUEST_URI} myfile \. php [NC]
RewriteCond % {REMOTE_ADDR }! ^ 127.0.0.1 $
RewriteRule. *-[R = 503, L]

Http: // path/test. php/sign = 123456`
If ($ __get ["sign"]! = 123456) {exit ;}

Match the obtained IP address with the Intranet IP Address

I feel that it is more convenient to find another port in the gateway and put it on that port.

The full name of the Robots Protocol (also known as crawler Protocol and robot Protocol) is "Robots Exclusion Protocol)