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Adding, deleting, modifying, and querying php Data Access, and adding and deleting php Data Access

Source: Internet
Author: User
Tags learn php programming
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Adding, deleting, modifying, and querying php Data Access, and adding and deleting php Data Access

Add, delete, modify, query, and perform small exercises.

1. view the news page ----- Homepage

<Html> 

　　


Ii. Publish a news page ----- add content


<Html> 

　　


Processing of submitted content:


<? Php $ newsid =$ _ POST ["newsid"]; $ title =$ _ POST ["title"]; $ author =$ _ POST ["author"]; $ source = $ _ POST ["source"]; $ content = $ _ POST ["content"]; $ time = date ("Y-m-d ", time (); $ db = new MySQLi ("localhost", "root", "", "mydb ");! Mysqli_connect_error () or die ("contact failed! "); $ SQL =" insert into news values ('{$ newsid}', '{$ title}', '{$ author}', '{$ source }', '{$ content}', '{$ time}') "; $ result = $ db-> query ($ SQL); if ($ result) {header (" location: xinwen. php ");} else {echo" failed to add news! ";}


3. Delete content


<? Php $ newsid = $ _ GET ["newsid"]; $ db = new MySQLi ("localhost", "root", "", "mydb ");! Mysqli_connect_error () or die ("connection failed! "); $ SQL =" delete from news where newsid = '{$ newsid}' "; $ result = $ db-> query ($ SQL); if ($ result) {header ("location: ChaKan. php ") ;}else {echo" failed to delete data ";}?>
　　

4. Modify the news page-Modify the news content and submit it for viewing


<Html> 

　　


After the modification is submitted, process the modification:


<? Php $ newsid =$ _ POST ["newsid"]; $ title =$ _ POST ["title"]; $ author =$ _ POST ["author"]; $ source = $ _ POST ["source"]; $ content = $ _ POST ["content"]; $ time = date ("Y-m-d ", time (); $ db = new MySQLi ("localhost", "root", "", "mydb ");! Mysqli_connect_error () or die ("contact failed! "); $ SQL =" update news set title = '{$ title}', author = '{$ author}', source = '{$ source }', content = '{$ content}', time = '{$ time}' where newsid = '{$ newsid }'"; $ result = $ db-> query ($ SQL); if ($ result) {header ("location: Update. php ");} else {echo" failed to modify data! ";}


The above is all the content of this article. I hope it will help you learn php programming.

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Related Keywords:
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