removing whitespaces

Hello,

I try to remove whitespaces from a string using the preg_replace function
like

preg_replace("/[\t ][\t ]*/"," ",$string);

This works great, but makes no handles all characters in the same way. I
want to preserve data between double quotes. So,
hello world "It is a sunny... world"
shall be reduced to
hello world "It is a sunny... world"

and should not remove the whitespaces between the quotes.

Can someone help me ?

Thanks in advance

Richard


.

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