Problem after update php to 5.3.3 unexpected T_CONSTANT_ENCAPSED_STRING

[ccsakuweb]

After the update from php 5.1 to 5.3.3 my website doesn't work.

I have this error in the error log.

[Mon Oct 03 04:03:25 2011] [error] [client 65.99.235.248] PHP Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING in .../httpdocs/tophits3.php on line 29

I need help to fix it, I don't know where is the error to fix.

[Rembrandt]

i think you have a problem with single and double quotes

[V@no]

You forgot attach the file (tophits3.php) or show first 50 lines from that file.

[ccsakuweb]

wow  You are right Rembrandt. It was that. A bad double quote with concatenation.
But I don't understand, why this error has happened after the installation of php 5.3. I have not changed tophits3.php for years. Now I have fear that it happens again in another php file and in another page, with no notice of me.