Typo fix in SessionHandler

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Provider by anonymous 35971

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332329 c90b9560-bf6c-de11-be94-00142212c4b1
Line length correction in explode() example

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332330 c90b9560-bf6c-de11-be94-00142212c4b1