Can PHP automatically obtain the code for the document keyword? Solution

Can PHP automatically obtain the code for the document keyword? Can PHP automatically obtain the code for the document keyword? If Baidu Knows or asks such a function, you can ask a question, write a title, and list the content corresponding to the title. Thank you for learning ., The homeowner just wants to make a search function ~ Obtain the search criteria and then SQL = & quot; select * fromtab. can PHP automatically obtain the code for the document keyword?
Can PHP automatically obtain the code for the document keyword?

Or functions like Baidu Knows or asks

Ask a question, write a title, and list the content corresponding to the title.

Thank you for learning.

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The homeowner just wants to make a search function ~ Obtain the search criteria and then SQL = "select * from table where title '% the search criteria % '"