PHP: Obtain the City Based on the IP address

Welcome to the Linux community forum and interact with 2 million technical staff to go to if ($ useripFlagchr (2) {$ AddrSeekfread ($ fd, 3); if (strlen ($ AddrSeek) 3) {fclose ($ fd); returnSystemError;} $ useripFlagfread ($ fd, 1); if

Welcome to the Linux community forum and interact with 2 million technical staff> go to if ($ useripFlag = chr (2) {$ AddrSeek = fread ($ fd, 3 ); if (strlen ($ AddrSeek) 3) {fclose ($ fd); return 'System error';} $ useripFlag = fread ($ fd, 1); if

Welcome to the Linux community forum and interact with 2 million technicians>

If ($ useripFlag = chr (2 )){

$ AddrSeek = fread ($ fd, 3 );

If (strlen ($ AddrSeek) <3 ){

Fclose ($ fd );

Return 'System error ';

}

$ UseripFlag = fread ($ fd, 1 );

If ($ useripFlag = chr (2 )){

$ AddrSeek2 = fread ($ fd, 3 );

If (strlen ($ AddrSeek2) <3 ){

Fclose ($ fd );

Return 'System error ';

}

$ AddrSeek2 = implode ('', unpack ('l', $ AddrSeek2. chr (0 )));

Fseek ($ fd, $ AddrSeek2 );

} Else {

Fseek ($ fd,-1, SEEK_CUR );

}

While ($ char = fread ($ fd, 1 ))! = Chr (0 ))

$ UseripAddr2. = $ char;

$ AddrSeek = implode ('', unpack ('l', $ AddrSeek. chr (0 )));

Fseek ($ fd, $ AddrSeek );

While ($ char = fread ($ fd, 1 ))! = Chr (0 ))

$ UseripAddr1. = $ char;

} Else {

Fseek ($ fd,-1, SEEK_CUR );

While ($ char = fread ($ fd, 1 ))! = Chr (0 ))

$ UseripAddr1. = $ char;

$ UseripFlag = fread ($ fd, 1 );

If ($ useripFlag = chr (2 )){

$ AddrSeek2 = fread ($ fd, 3 );

If (strlen ($ AddrSeek2) <3 ){

Fclose ($ fd );

Return 'System error ';

}

$ AddrSeek2 = implode ('', unpack ('l', $ AddrSeek2. chr (0 )));

Fseek ($ fd, $ AddrSeek2 );

} Else {

Fseek ($ fd,-1, SEEK_CUR );

}

While ($ char = fread ($ fd, 1 ))! = Chr (0 )){

$ UseripAddr2. = $ char;

}

}

Fclose ($ fd );

// Return the city result corresponding to the IP address

If (preg_match ('/http/I', $ useripAddr2 )){

$ UseripAddr2 = '';

}

$ Useripaddr = "$ useripAddr1 $ useripAddr2 ";

$ Useripaddr = preg_replace ('/CZ88.Net/is', '', $ useripaddr );

$ Useripaddr = preg_replace ('/^ s */is', '', $ useripaddr );

$ Useripaddr = preg_replace ('/s * $/is', '', $ useripaddr );

If (preg_match ('/http/I', $ useripaddr) | $ useripaddr = ''){

$ Useripaddr = 'no data ';

} Elseif (! $ This-> is_utf8 ($ useripaddr )){

$ Useripaddr = iconv ('gbk', 'utf-8', $ useripaddr );

}

Return $ useripaddr;

}

/**

* Determine whether my UTF-8 encoded string is used

* @ Param type $ string

* @ Return boolean

*/

Private function is_utf8 ($ string ){

If (preg_match ("/^ ([". chr (1, 228 ). "-". chr (1, 233 ). "] {1 }[". chr (1, 128 ). "-". chr (1, 191 ). "] {1 }[". chr (1, 128 ). "-". chr (1, 191 ). "] {1}) {1}/", $ string) = true | preg_match ("/([". chr (1, 228 ). "-". chr (1, 233 ). "] {1 }[". chr (1, 128 ). "-". chr (1, 191 ). "] {1 }[". chr (1, 128 ). "-". chr (1, 191 ). "] {1}) {1} $/", $ string) = true | preg_match ("/([". chr (1, 228 ). "-". chr (1, 233 ). "] {1 }[". chr (1, 128 ). "-". chr (1, 191 ). "] {1 }[". chr (1, 128 ). "-". chr (1, 191 ). "] {1}) {2,}/", $ string) = true ){

Return true;

} Else {

Return false;

}

}

}

You can search for the QQWry. Dat file on Baidu or send it to your mailbox. I will send it to you via email.

Demo:

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4 include FCPATH. 'In in/ipLocation/ipCity. class. php ';

$ City = new ipCity ();

$ Addr = $ city-> getCity ('2017. 0.0.1 ');

Echo $ addr; // echo local address

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