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HomeBackend DevelopmentPHP TutorialCommon 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 functions and usage of arrays in php

##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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