Truy vấn trong PHP

Giá trị trả về. Đối với CHỌN, HIỂN THỊ, MÔ TẢ hoặc GIẢI THÍCH, nó trả về một đối tượng mysqli_result. Đối với các truy vấn thành công khác, nó trả về true. Mặt khác, nó trả về false khi thất bại

Hãy hiểu cách chúng ta có thể thực thi một truy vấn SQL

Thực hiện một truy vấn SQL. Chúng tôi sẽ hiểu cách chúng tôi có thể thực hiện một truy vấn SQL với một ví dụ. Chúng tôi sẽ tạo một cơ sở dữ liệu, bảng và sau đó chèn một số giá trị vào đó

Ví dụ. Tạo cơ sở dữ liệu và chèn một số giá trị vào đó

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đầu ra

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Tạo bảng

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đầu ra

Table has been created successfully

Chèn một số giá trị vào bảng “Emp”

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đầu ra

New record created successfully

Ghi chú. Vì chúng tôi đã sử dụng AUTO_INCREMENT, nên nó sẽ tự động chèn bản ghi có “id=1” và với mỗi bản ghi mới được chèn, nó sẽ tăng “id” lên một

Lấy kết quả từ cơ sở dữ liệu

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PHP có phải là ngôn ngữ truy vấn không?

Làm cách nào để thực hiện truy vấn trong PHP?

Truy vấn trong cơ sở dữ liệu là gì?

Việc sử dụng truy vấn chọn trong PHP là gì?