For example add into /etc/apt/sources.lists following lines:
# some coment deb http://www.cecak.cz/debian/wheezy/php53/ ./
Sources are available at build directory.
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< Consider swtich to PHP 5.4, old build could be unsecure! :) >
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(__) /
(oo) /
/------\/
/ | ||
* /\---/\
~~ ~~