Added an example for EXT_STMT opcode

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Provided by anonymous 26427

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332350 c90b9560-bf6c-de11-be94-00142212c4b1
Typo fix in strtr()

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Provided by anonymous 36934

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332351 c90b9560-bf6c-de11-be94-00142212c4b1