Implementation method of php keyword query

How to implement keyword query in php: first obtain user input; then decompose multiple keywords entered by the user and store them in an array; then construct an SQL statement based on multiple keywords; and finally sort the search results , and display the current search results.

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PHP searches the database mainly by using like in the SQL statement clause to achieve. If you search for multiple keywords at the same time, you can use the union clause to combine the search results. The following code implements a search page.

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请输入要搜索关键词：   
 
 
当前关键词： 
 
 0) do { //显示当前搜索结果 ?> 
* ( | )
    

Here, you can use English commas "," on the page to search for multiple keywords.

Here, the connection with the database is still placed in a special PHP file to facilitate later modifications.

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