ThinkPHP open the verification code page to display the garbled solution _ php instance

This article mainly introduces ThinkPHP's solution to displaying garbled characters on the verification code page. it is very useful to add a user-defined file verification directory in the header and filter the BOM header, for more information about how to enable ThinkPHP to open the verification code page, see the example in this article. Share it with you for your reference. The specific analysis is as follows:

When developing with thinkphp, the verification code may be garbled. the solution is to put the following file in the root directory, which can be solved after access. the specific PHP code is as follows:

The code is as follows:

<? Php
If (isset ($ _ GET ['dir']) {// sets the file directory
$ Basedir = $ _ GET ['dir'];
} Else {
$ Basedir = '.';
}
$ Auto = 1;
Checkdir ($ basedir );

Function checkdir ($ basedir ){
If ($ dh = opendir ($ basedir )){
While ($ file = readdir ($ dh ))! = False ){
If ($ file! = '.' & $ File! = '..'){
If (! Is_dir ($ basedir. "/". $ file )){
Echo "filename: $ basedir/$ file". checkBOM ("$ basedir/$ file ")."
";
} Else {
$ Dirname = $ basedir. "/". $ file;
Checkdir ($ dirname );
}
}
}
Closedir ($ dh );
}
}

Function checkBOM ($ filename ){
Global $ auto;
$ Contents = file_get_contents ($ filename );
$ Charset [1] = substr ($ contents, 0, 1 );
$ Charset [2] = substr ($ contents, 1, 1 );
$ Charset [3] = substr ($ contents, 2, 1 );
If (ord ($ charset [1]) = 239 & ord ($ charset [2]) = 187 & ord ($ charset [3]) = 191) {
If ($ auto = 1 ){
$ Rest = substr ($ contents, 3 );
Rewrite ($ filename, $ rest );
Return ("BOM found, automatically removed .");
} Else {
Return ("BOM found .");
}
}
Else return ("BOM Not Found .");
}
Function rewrite ($ filename, $ data ){
$ Filenum = fopen ($ filename, "w ");
Flock ($ filenum, LOCK_EX );
Fwrite ($ filenum, $ data );
Fclose ($ filenum );
}
?>

I hope this article will help you design PHP programs based on the ThinkPHP framework.