PHP Chinese word source encountered a small problem

Define (' _sp_ ', Chr (0xFF). Chr (0xFE)); Define (' UCS2 ', ' ucs-2be ');

What is the purpose of these 2 constants definitions? _SP_ is defined as Chr (0xFF). chr (0xFE) What do you mean, I can not find in the ASCII table FF,FE these 2 corresponding coding ah?
The following code is

        Loading sub-dictionary        $hw = ';        $ds = file ($dicAddon); txt format dictionary file for//17 line        foreach ($ds as $d)        {            $d = trim ($d);            if ($d = = ") Continue;            $estr = substr ($d, 1, 1);            if ($estr = = ': ') {                $HW = substr ($d, 0, 1);            }            else            {                $spstr = _sp_;                $spstr = Iconv (UCS2, ' utf-8 ', $spstr);//How does UCS2 code appear? What                's the $WS = Explode (', ', $d);//each line of kanji, separated by an intermediate comma into an array                $wall = Iconv (' Utf-8 ', UCS2, join ($SPSTR, $WS));//With _SP_ and combine them into strings?? , and then converted it into a ucs2?                $ws = Explode (_sp_, $wall);//And then split into groups? What do you mean AH!!!                foreach ($ws as $estr)                {                    $this->addondic[$HW] [$estr] = strlen ($ESTR);}}}        

This code is loading the dictionary file, but I don't understand the logic of the Else code? Who can talk about it briefly?

Reply to discussion (solution)

Your dictionary file is UCS-2BE encoded.

Chr (0xFF). Chr (0xFE) is Ucs-2be's BOM

Your dictionary file is UCS-2BE encoded.

Chr (0xFF). Chr (0xFE) is Ucs-2be's BOM

Still some do not understand, the establishment _sp_ this constant has what function? Ucs-2be's BOM is written directly into a variable on the line, why also take the Chr () function to calculate it?

Chr (0xFF). chr (0xFE) can write "\xff\xfe"
But the author is not as smart as you, so I wrote it with a string function.

Chr (0xFF). chr (0xFE) can write "\xff\xfe"
But the author is not as smart as you, so I wrote it with a string function.
The author is the author of Dede, how is it possible? Kending Bushi Zheyangde

It's not him, it's you.
I don't know how to work!

It's not him, it's you.
I don't know how to work!
Moderator, I really do not understand, others use _SP_ when the string segmentation logo, not BOM bar, can help!

A BOM is an encoding type declaration that interprets _sp_ as a BOM to help understand
You are not "in the ASCII table can not find ff,fe these 2 corresponding code"
Look again

Define (' _sp_ ', Chr (0xFF). Chr (0xFE)); Define (' UCS2 ', ' ucs-2be '); $spstr = _sp_; $spstr = Iconv (UCS2, ' utf-8 ', $spstr); Echo Bin2Hex ($SPSTR);

Get Efbfbe
This is Utf-8 's BOM.

As to why he did it, look at the dictionary file and you'll know what's going on.

A BOM is an encoding type declaration that interprets _sp_ as a BOM to help understand
You are not "in the ASCII table can not find ff,fe these 2 corresponding code"
Look again

Define (' _sp_ ', Chr (0xFF). Chr (0xFE)); Define (' UCS2 ', ' ucs-2be '); $spstr = _sp_; $spstr = Iconv (UCS2, ' utf-8 ', $spstr); Echo Bin2Hex ($SPSTR);

Get Efbfbe
This is Utf-8 's BOM.

As to why he did it, look at the dictionary file and you'll know what's going on.
You don't seem right, but no one knows that.

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