php Chinese character interception function

Source: Internet
Author: User
Keywords Network programming PHP tutorial
Tags function network network programming php php tutorial programming public return

/ php tutorial Chinese characters interception function
// string to be intercepted, $ num length to be intercepted, return intercepted string

public function substrgb ($ in, $ num)
{
// $ num = 16;
$ pos = 0;
$ bytenum = 0;
$ out = "";
while ($ num) {

$ c = mb_substr ($ in, $ pos, 1, "euc-jp");
if ($ c == "n") break;
if (strlen ($ c) == 1) {
$ pos ++;
$ bytenum ++;
if ($ bytenum> $ num) break;
$ out. = $ c;
}
else
{
$ pos ++;
$ bytenum = $ bytenum + 2;
if ($ bytenum> $ num) break;
$ out. = $ c;
}
}
return $ out;
}

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