Hướng dẫn why we use die in php - tại sao chúng tôi sử dụng die trong php

❮ Php TÀI LIỆU THAM KHẢO

Thí dụ

In một tin nhắn và chấm dứt tập lệnh hiện tại:

$site = "https://www.w3schools.com/";
fopen($site,"r")
or die("Unable to connect to $site");
?>



Định nghĩa và cách sử dụng

Hàm chết () là một bí danh của hàm thoát ().


Cú pháp

Giá trị tham số

Tham sốSự mô tả
thông điệpYêu cầu. Một thông báo hoặc số trạng thái để in trước khi kết thúc tập lệnh. Một số trạng thái sẽ không được ghi vào đầu ra, chỉ được sử dụng làm trạng thái thoát.

Chi tiết kỹ thuật

Giá trị trở lại:Không
Phiên bản PHP:4+

❮ Php TÀI LIỆU THAM KHẢO


(Php 4, Php 5, Php 7, Php 8)

chết - tương đương với exitEquivalent to exit

Sự mô tả

Cấu trúc ngôn ngữ này tương đương với thoát ().exit().

Hayley Watson ¶

10 năm trước

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.

If a supermarket freezer breaks down, a customer who wanted to buy a tub of ice cream doesn't expect to be kicked out of the building.

atesin gamil com ¶

7 tháng trước

"... OR DIE..."

    do_something($with_this) or die ('oops!');
?>

(in php, "die" is actually an alias of "exit")

beware until this is often used as an error handling statement actually isn't... is just the "or" boolean operator overloaded (short circuited)

it won't supress any error message, won't prevent you for fatal errors or crashes, is not an alias for "try/catch", and could has unpredictable results... it just means something like this:

- execute the first statement ""do_something($with_this)"" normally
-- if the statement results TRUE: no need to execute the second statement so skip it
-- else if returns FALSE... well i am not sure about the result of the whole expression, so continue with second statement ""die('cuack!)""

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.0

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.1

Damien Bezborodov ¶

13 năm trước

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.3

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.4

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.5

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.6

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.7

Jbailey tại Raspberryginger Dot Com ¶

15 năm trước

It is poor design to rely on die() for error handling in a web site because it results in an ugly experience for site users: a broken page and - if they're lucky - an error message that is no help to them at all. As far as they are concerned, when the page breaks, the whole site might as well be broken.9

Thông tin tại Alzlper Dot Com ¶

4 năm trước

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.0

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.1

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.2

smcbride tại msn dot com ¶

1 năm trước

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.4

Stysan ¶

1 tháng trước

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.5

Ẩn danh ¶

1 năm trước

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.6

If you ever want the public to use your site, always design it to handle errors in a way that will allow them to continue using it if possible. If it's not possible and the site really is broken, make sure that you find out so that you can fix it. die() by itself won't do either.7

Việc sử dụng cái chết là gì?

Một cái chết là một công cụ máy móc chuyên dụng được sử dụng trong các ngành sản xuất để cắt và/hoặc hình thành vật liệu theo hình dạng hoặc hồ sơ mong muốn.Dies dập được sử dụng với một máy ép, trái ngược với việc vẽ chết (được sử dụng trong sản xuất dây) và dies đúc (được sử dụng trong đúc) không.to cut and/or form material to a desired shape or profile. Stamping dies are used with a press, as opposed to drawing dies (used in the manufacture of wire) and casting dies (used in molding) which are not.

Die () và thoát () giống nhau trong PHP?

Hàm php die (): Trong php, die () giống như thoát ().Kết quả của chương trình sẽ là một màn hình trống.Sử dụng Die () khi có lỗi và phải dừng thực thi.die() is the same as exit(). A program's result will be an empty screen. Use die() when there is an error and have to stop the execution.

Tôi nên sử dụng php chết hay thoát?

Không có sự khác biệt giữa chết và thoát, chúng giống nhau."Cấu trúc ngôn ngữ này tương đương với Die ().""Cấu trúc ngôn ngữ này tương đương với thoát ()."

Sự khác biệt giữa Die và Echo trong PHP là gì?

Sự khác biệt giữa Echo và Die () hoặc chúng giống nhau là gì?Hàm Die () có thể chấp nhận một chuỗi đối số tùy chọn mà nó sẽ xuất ngay trước khi kết thúc tập lệnh.echo () chỉ xuất ra các đối số của nó, nó sẽ không chấm dứt tập lệnh.The die() function can accept an optional argument string that it will output just before terminating the script. echo() only outputs its arguments, it will not terminate the script.