Multiple Insert, Update, Delete example using PHP & MySQLi On 6/02/2015 By. Using this script you can update or delete multiple rows of MySQL database at a time on checkboxes selection with multiple insert. The update query. PHP Examples PHP Examples PHP Quiz. Update Data In a MySQL Table Using MySQLi and PDO. The UPDATE statement is used to update existing records in a table. Definition and Usage. The mysqli_multi_query() function performs one or more queries against the database. The queries are separated with a semicolon. Steps in PHP Multiple Rows Update/Delete. To take similar example seen in PHP CRUD article. Updated by setting current iteration values to MySQL UPDATE query. Free PHP tutorials by example. Multiple WHERE conditions. MySQL allows you to perform more complicated queries by using AND and OR in your WHERE clause to tie conditions together.
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This tutorial will guide you that how to perform multiple insert, update and delete operations using PHP & MySQLi, using this script you can update or delete multiple rows of MySQL database at a time on checkboxes selection with multiple insert, in my previous tutorial we have seen that how to Select / Deselect all checkboxes using jQuery, so using jQuery we can select all or multiple records.
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There may be a requirement where existing data in a MySQLi table needs to be modified. You can do so by using SQL UPDATE command. This will modify any field value of any MySQLi table.
Syntax
Here is generic SQL syntax of UPDATE command to modify data into MySQLi table −
You can update one or more field altogether.
You can specify any condition using WHERE clause.
You can update values in a single table at a time.
The WHERE clause is very useful when you want to update selected rows in a table.
Updating Data from Command Prompt
This will use SQL UPDATE command with WHERE clause to update selected data into MySQLi table tutorials_inf.
Example
Following example will update name field for a record having tutorial_inf.
Updating Data Using PHP Script
You can use SQL UPDATE command with or without WHERE CLAUSE into PHP function mysqli_query(). This function will execute SQL command in similar way it is executed at mysql> prompt.
Example
Try out the following example to update name field for a record.
Php Mysqli Multi Query Update Examples
The sample output should be like this −