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MySQL 5.1 Plugin Development by Andrew Hutchings, Sergei Golubchik

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A PHP full-text parser

To show the layout of a full-text parser plugin we will create a simple parser to parse PHP scripts. PHP syntax has a few peculiarities that are not taken into account by the MySQL built-in full-text parser. In particular, all variable names in PHP start with a dollar sign, which is, in fact, a part of the name; a variable $while is not the same as a loop statement while. But a dollar sign is not just another character that can be used in variable names—the string"$foo$bar" contains two PHP variables, not one. Also, variables can have different scopes; a variable foo::$bar is not the same as a variable $bar. Let's try to solve this in our full-text parser plugin. According to the above, it will be a "tokenizer" plugin—a ...

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