Yes, It is bad practice. Here are reasons:

• cost of making connectio is high
• cannot use transaction during many function is called
• every instance has it's own connection. It's too bad

Use PDO, or make singleton db class youself.

Yes, It is bad practice. Here are reasons:

• cost of making connectio is high
• cannot use transaction during many function is called
• every instance has it's own connection. It's too bad
• and so on

Use PDO, or make singleton db class youself.