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Làm cách nào để in đối tượng DateTime trong PHP?

 

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00

Làm cách nào để sao chép một đối tượng DateTime trong PHP?

Cải thiện bài viết

Lưu bài viết

Thích bài viết

  • Cập nhật lần cuối. 20 tháng 8 năm 2021

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    • Cải thiện bài viết

    Lưu bài viết

    Cho một đối tượng DateTime và nhiệm vụ là tạo một bản sao của đối tượng đó. Để tạo một bản sao của đối tượng DateTime, chúng tôi sử dụng từ khóa clone được mô tả bên dưới.
    Một bản sao của đối tượng DateTime được tạo bằng cách sử dụng từ khóa clone [gọi phương thức __clone[] của đối tượng nếu có thể]. Không thể gọi trực tiếp phương thức __clone[] của một đối tượng. Khi một đối tượng được nhân bản, PHP sẽ thực hiện một bản sao nông của tất cả các thuộc tính của đối tượng. Bất kỳ thuộc tính nào là tham chiếu đến các biến khác sẽ vẫn là tham chiếu.

    cú pháp.  

    $DateTime_copy_object_name = clone $DateTime_object_to_be_copied

    Các ví dụ dưới đây minh họa việc nhân bản đối tượng DateTime trong PHP

    ví dụ 1.   

    PHP




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    01

     

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    05
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    04
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    0 
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    05
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    04
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    3
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    4
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    5

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    7 
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    7____15

     

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    0 
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    05
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    1
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    3
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    5

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    018

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    019

     

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    020

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    04
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    022
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    06 
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    024
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    025
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    027

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    7 
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    029
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    5

     

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    0 
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    05
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    04
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    3
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    4
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    5

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    7 
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    7____15

     

     

    Printing initial values
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    0 
    Printing initial values
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    05
    Printing initial values
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    1
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    3
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    4
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    5

    Printing initial values
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    7 
    Printing initial values
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    047
    Printing initial values
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    5

    Printing initial values
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    049

    đầu ra.  

    Printing initial values
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    ví dụ 2. Chương trình dưới đây phân biệt toán tử nhân bản với toán tử gán [ = ].  

    PHP




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    01

     

    Printing initial values
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    02

     

    Printing initial values
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    03

    Printing initial values
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    04 
    Printing initial values
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Printing values after change
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    05
    Printing initial values
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    06 
    Printing initial values
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    07

     

    Printing initial values
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    0

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    1 
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    05
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    3 
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    04
    Printing initial values
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Printing values after change
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    5

     

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    063 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    04
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

     

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    6

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    8
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

     

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    0 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    04
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    3
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    4
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    7____15

     

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    0 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    063
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    3
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    4
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    07
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

     

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    0 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    1
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    3
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    4
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    016
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

     

     

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    018

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    019

     

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    20

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    04
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    022
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    06 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    024
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    25
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    026

     

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    027

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    029
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

     

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    0 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    04
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    3
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    4
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    7____15

     

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    0 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    063
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    3
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    4
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    07
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

     

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    0 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    05
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    1
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    3
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    4
    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    7 
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    047
    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    5

    Printing initial values
Original object: 2020-04-14 17:14:18
Cloned object: 2020-04-14 17:14:18

Printing values after change
Original object: 2020-04-17 17:14:18
Cloned object: 2020-04-14 17:14:18
    049

    đầu ra.  

    Printing initial values
Original object: 2020-04-14 17:14:49
Reference object: 2020-04-14 17:14:49
Cloned object: 2020-04-14 17:14:49

Printing values after change
Original object: 2020-07-14 17:14:49
Reference object: 2020-07-14 17:14:49
Cloned object: 2020-04-14 17:14:49

    Vì vậy, để tạo bản sao của đối tượng chúng ta sử dụng bản sao, không sử dụng toán tử [=] vì nó tạo tham chiếu.
     


    Ghi chú cá nhân của tôi arrow_drop_up

    Tiết kiệm

    Vui lòng Đăng nhập để nhận xét.

    Làm cách nào để in đối tượng ngày tháng trong PHP?

    $d=mktime[11, 14, 54, 8, 12, 2014]; . echo "Created date is " . date["Y-m-d h. i. sa", $d];

    Làm cách nào để lấy giá trị ngày từ đối tượng DateTime trong PHP?

    Để truy cập thuộc tính ngày, bạn sẽ cần sử dụng phương thức format[] được tích hợp trong Lớp DateTime

    Làm cách nào để hiển thị định dạng ngày trong PHP?

    Ví dụ. $date=date_create["15-03-2013"]; . i. s"];echo date_format[$date,"Y/m/d H:i:s"];

    Làm cách nào để tạo đối tượng DateTime trong PHP?

    Ví dụ: để tạo đối tượng DateTime "hiện tại". $currentDateTime = new DateTime[]; Theo tùy chọn, chúng tôi có thể cung cấp một chuỗi biểu thị ngày và giờ hợp lệ làm tham số đầu tiên của hàm tạo DateTime. Múi giờ mặc định sẽ vẫn được sử dụng vì nó không được chỉ định.

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