The example in this article describes how php+mysql deletes a specified number of employee information. Share to everyone for your reference. The specific analysis is as follows:
Use PHP to submit the employee number to MySQL, and then by MySQL to accept the data and use delete for data deletion operations, here to share a few concrete examples.
Example of a DELETE statement:
Syntax structure, we can see that, like the update syntax, we can omit the WHERE clause, but this is a very dangerous behavior, because if you do not specify a WHERE clause, delete deletes all the records in the table and deletes them immediately.
1. Delete the specified number of employee information, the code is as follows:
Key technology: The key point of this example is the flexible application of the while () loop statement, executing the while () loop statement, performing the delete operation on the cycle weight, and completing the cyclic deletion of the data according to the submitted parameter values.
Design process:
(1) Create PHP script files, first, connect MySQL database server, connect MySQL name db_while database, and set the page encoding format, and then, define the loop variable variable $a and $b, set the loop condition in the 1th while loop to $b< $a , and then use the while statement to iterate through the data in the datasheet and perform the deletion of the data, with the following code:
I hope this article will help you with the Php+mysql program design.
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