PHP Ds\Vector Functions Complete Reference
Last Updated :
25 Jan, 2023
A Vector Data Structure is used to store the sequence of values in a contiguous memory buffer which grows and shrinks automatically. The vector data structure mapped the index value to its index buffer and the growth factor isn’t bound to a specific multiple or exponent. It is the efficient Data Structure in PHP 7 to provide the alternative of an array.
Requirements: PHP 7 is required for both extension and the compatibility polyfill.
Installation: The easiest way to install data structure by using PECL extension.
pecl install ds
Syntax:
public Ds\Vector:: Function
Example: Below programs illustrate the Ds\Vector::find() Function in PHP:
PHP
<?php
$vector = new \Ds\Vector([1, 2, 3, 4, 5]);
var_dump( $vector );
var_dump( $vector ->find(1));
var_dump( $vector ->find(5));
var_dump( $vector ->find(8));
var_dump( $vector ->find( "Geeks" ));
?>
|
Output:
object(Ds\Vector)#1 (5) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(4)
[4]=>
int(5)
}
int(0)
int(4)
bool(false)
bool(false)
The complete list of data structure DS\Vector are given below:
Functions
|
Description
|
allocate() |
It provides the custom size of the vector to allocate space. |
apply() |
Update all values in the array by applying the callback function to each value of the vector. |
capacity() |
Return the current capacity of the vector. |
clear() |
Clear the vector elements by removing all the elements from |
__construct() |
Create a new instance. |
contains() |
Check the vector contains given value or not. |
copy() |
Create a copy of given vector |
count() |
Count the number of elements in the vector. |
filter() |
Filter out the only elements which satisfy the condition defined in the callback function. |
find() |
Find the index of the element in the vector. |
first() |
Find the first element in the vector. |
get() |
Return the element at the given index. |
insert() |
Insert the element into the vector at the given index. |
isEmpty() |
Check the vector is empty or not. |
join() |
Separator provided as the argument. |
jsonSerialize() |
Return the element which can be converted to JSON. |
last() |
Return the last element of the vector. |
map() |
Return the result of a callback after applying to each value in the vector. |
merge() |
Merge all the elements to the vector. |
pop() |
Remove the last element of a vector and return it. |
push() |
Add elements to the end of the vector. |
reduce() |
Reduce the vector to a single value by applying operations in the callback function. |
remove() |
Remove and return a value by index. |
reverse() |
Reverse the vector elements in-place. |
rotate() |
Rotate the array elements by a given number of rotation. Rotations also happen in-place. |
set() |
Set the value in the vector at the given index. |
shift() |
Remove the first element from the vector and return it. |
slice() |
Return the sub-vector of the given vector. |
sort() |
Sort the elements of vector in-place. |
sorted() |
This is used to sort the elements of the vector by creating a copy of the original vector. |
sum() |
Returns the sum of all the elements of the vector. |
toArray() |
All the elements of the vector are copied to the array. |
unshift() |
This is used to adds elements to the front of vector. |
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