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- Hàm next[] trong PHP
Hướng dẫn cách sử dụng hàm next[] về mảng trong lập trình PHP
Nội dung chính
- Tác dụng của hàm next[]
- More Examples
- Bài viết này đã giúp ích cho bạn?
- Bài viết mới
- 1. nextSibling javascript là gì?
- 2. Cách dùng nextSibling trong javascript
Tác dụng của hàm next[]
The next[]
function moves the internal pointer of an array to the next element, and
returns its value.
The following table summarizes the technical details of this function.
Returns the value of the next element in the array, or FALSE if there are no more elements.
|
PHP 4+ |
Tip: Every array has an internal pointer that points to the current element in the array. When a new array is created, the current pointer is initialized to reference the first element in the array.
Syntax
The basic syntax of the next[]
function is given with:
The following example shows the next[]
function in action.
Parameters
The next[]
function accepts the following parameters.
array | Required. Specifies the array to work on. |
More Examples
Here're some more examples showing how next[]
function actually works:
The following example demonstrates how to get the next value from an associative array:
The next[]
function is commonly used along with the following functions:
current[]
– Returns the value of the current element in an array.end[]
– Moves the internal pointer of an array to its last element, and returns its value.prev[]
– Moves the internal pointer of an array to the previous element, and returns its value.reset[]
– Set the internal pointer of an array to its first element, and returns its value.key[]
– Returns the key of the current element in an array.
Here's an example that demonstrates how these functions basically work: