id=%d interpretation of SQL query statements in PHP (recommended) _php instance

Source: Internet
Author: User

Some of the SQL statements are written in this way:

' SELECT ID from dbname WHERE xx_id =%d; ', $bl [' student_id ']

where the "xx_id =%d", where%d refers to a decimal number (d meaning is the meaning of decimal decimal), the content of the decimal number is the back of the $bl[' student_id '] this.

The above is a small set to introduce PHP SQL query Statements id=%d explanation, I hope to help you, if you have any questions welcome to my message, small series will promptly reply to everyone!

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