The PHP design pattern has been serialized for four weeks. we have learned about the proxy pattern, responsibility chain pattern, structure pattern, and Command pattern in the PHP design pattern. The main character of today is the Interpreter mode, which includes a syntactic expression with a composite hierarchical structure. The PHP design pattern is a series of four weeks that have been serialized, we have learned about the proxy mode, responsibility chain mode, structure mode, and command mode in the PHP design mode. The main character of today is the Interpreter mode, which includes a syntactic representation with a composite class layered structure. The rule is mapped to the class, the expressions following the syntax can be converted into an abstract syntax tree. except for the instance object graph in the composite mode, there is no other content.
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