unicode - Remove multiple BOMs from a file

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I am using a Javascript file that is a
concatenation of other JavaScript
files.

Unfortunately, the person who
concatenated these JavaScript files together did not use the proper encoding when
reading the file, and allowed a BOM for every single JavaScript file to get written to
the concatenated JavaScript
file.

Does anyone know a simple way
to search through the concatenated file and remove any/all BOM
markers?

Using PHP or a bash script for Mac OSX
would be great.

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class="normal">Answer

See also:
href="https://stackoverflow.com/questions/1068650/using-awk-to-remove-the-byte-order-mark">Using
awk to remove the Byte-order mark

To
remove multiple BOMs from anywhere within a text file you can try something similar.
Just leave out the ^
anchor:

perl -e
            's/\xef\xbb\xbf//;' -pi~
            file.js

(This
edits the file in-place. But creates a backup
file.js~.)