Common functions and usage of arrays in php

PHP provides various array functions, including: adding and deleting elements: array_push(), array_pop() adding and deleting the first element: array_unshift(), array_shift() merging and difference: array_merge( ), array_diff() Get a part of an array: array_slice() Insert, delete or replace elements: array_splice() Apply a function to array elements: array_map() Filter array elements: array_filter() Group array elements into one value: array_reduce() Check whether the element exists: in_arr

##Common array functions in PHP

1. array_push() and array_pop(): Adding and removing elements

• array_push() Adds one or more elements to the end of the array.
• array_pop() Removes an element from the end of the array and returns that element.

2. array_unshift() and array_shift(): Add and delete the first element

##array_unshift()
• in Adds one or more elements to the beginning of the array.
array_shift()
• Removes an element from the beginning of the array and returns that element.

3. array_merge() and array_diff(): merge and difference

array_merge()
• Combine two Or multiple arrays are combined into a new array, removing duplicates.
array_diff()
• Returns the elements in the first array that do not exist in other arrays.

4. array_slice(): Get a part of the array

array_slice()
• Start getting from the specified position of the array Returns a new array with the specified number of elements.

5. array_splice(): Insert, delete or replace elements

array_splice()
• Insert, Remove or replace one or more elements.

6. array_map(): Apply the function to the array elements

array_map()
• to each element in the array Element applies the specified callback function, returning a new array.

7. array_filter(): Filter array elements

array_filter()
• Filter the array according to the specified callback function, Returns a new array containing elements that satisfy the condition.

8. array_reduce(): Convert array elements to one value

array_reduce()
• Apply array elements to The specified callback function performs the reduction and returns a result.

9. in_array(): Check whether the element exists

in_array()
• Check whether the specified element is in the array , returns a Boolean value.

10. array_key_exists(): Check whether the key exists

array_key_exists()
• Check whether the specified key exists Array, returns a Boolean value.

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