Php uses filter to verify mailbox ipv6 address url verification _ PHP Tutorial

Php uses the filter to verify the ipv6 address url of the mailbox. 1. verify email copy code: $ emailjb51@qq.com; $ resultfilter_var ($ email, FILTER_VALIDATE_EMAIL); var_dump ($ result); string (14) jb51@qq.com2, verify url location 1, verify email

The code is as follows:

$ Email = 'jb51 @ qq.com ';
$ Result = filter_var ($ email, FILTER_VALIDATE_EMAIL );
Var_dump ($ result); // string (14) "jb51@qq.com"

2. verify the url address

The code is as follows:

$ Url = "http://www.jb51.net ";
$ Result = filter_var ($ url, FILTER_VALIDATE_URL );
Var_dump ($ result); // string (22) "http://www.jb51.net"

3. verify the IP address

The code is as follows:

$ Url = "192.168.1.110 ";
$ Result = filter_var ($ url, FILTER_VALIDATE_IP );
Var_dump ($ result); // string (13) "192.168.1.110"

This method can also be used to verify ipv6.

The code is as follows:

$ Url = "2001: DB8: 2de: e13 ";
$ Result = filter_var ($ url, FILTER_VALIDATE_IP );
Var_dump ($ result); // string (17) "2001: DB8: 2de: e13"

4. check whether the value is an integer within an integer range.

The code is as follows:

$ I = '010 ';
$ Result = filter_var (
$ I,
FILTER_VALIDATE_INT,
// Set the value range for verification
Array (
'Options' => array ('min _ range' => 1, 'max _ range' => 100)
)
);
Var_dump ($ result); // bool (false)

Php variables are of a weak type. If a filter is not used, it is true to use a variable greater than or less than the symbol.

The code is as follows:

$ I = '010 ';
$ Result = $ I >= 1 & $ I <= 100;
Var_dump ($ result); // bool (true)

5. verify floating point number

The code is as follows:

$ Float = 12.312;
$ Result = filter_var ($ float, FILTER_VALIDATE_FLOAT );
Var_dump ($ result); // float (12.312)

The authorization code is as follows: $ email = 'jb51 @ qq.com '; $ result = filter_var ($ email, FILTER_VALIDATE_EMAIL); var_dump ($ result); // string (14) "jb51@qq.com" 2. verify url location...