Batch remove the PHP code for bom in the php file _ php instance-PHP Tutorial

Why is there a blank line at the beginning when I search for the source code of the web page today? to remove bom from the PHP code in the PHP file in batch, I need to delete the tool in the attachment. put the php file in the target directory, and then access the tool in the browser. php!

The code is as follows:

// This file is used to quickly test whether the UTF-8 encoded file is added with BOM and can be automatically removed.
$ Basedir = "."; // modify the directory to be checked for this behavior. the vertex indicates the current directory.
$ Auto = 1; // whether to automatically remove the detected BOM. 1 is yes, 0 is no.
// Do not change the following
If ($ dh = opendir ($ basedir )){
While ($ file = readdir ($ dh ))! = False ){
If ($ file! = '.' & $ File! = '..'&&! Is_dir ($ basedir. "/". $ file ))
Echo "filename: $ file". checkBOM ("$ basedir/$ file ")."
";
}
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 );
}
?>

PHP batch removes bom code from PHP files

The code is as follows:

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. _ http://www.joyphper.net> http://www.joyphper.net ");
} 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 );
}
?>