Array Functions in PHP 5 [Part 3]

Published: 01 April 2019
on channel: Globals Code

PHP 5 Array Functions

PHP Array Introduction
The array functions allow you to access and manipulate arrays.

Simple and multi-dimensional arrays are supported in php.

Installation
The array functions are part of the PHP core. There is no installation needed to use these functions.

PHP 5 Array Functions
Function Description

array_sum() Returns the sum of the values in an array
array_udiff() Compare arrays, and returns the differences (compare values only, using a user-defined key comparison function)
array_udiff_assoc() Compare arrays, and returns the differences (compare keys and values, using a built-in function to compare the keys and a user-defined function to compare the values)
array_udiff_uassoc() Compare arrays, and returns the differences (compare keys and values, using two user-defined key comparison functions)
array_uintersect() Compare arrays, and returns the matches (compare values only, using a user-defined key comparison function)
array_uintersect_assoc() Compare arrays, and returns the matches (compare keys and values, using a built-in function to compare the keys and a user-defined function to compare the values)
array_uintersect_uassoc() Compare arrays, and returns the matches (compare keys and values, using two user-defined key comparison functions)
array_unique() Removes duplicate values from an array
array_unshift() Adds one or more elements to the beginning of an array
array_values() Returns all the values of an array
array_walk() Applies a user function to every member of an array
array_walk_recursive() Applies a user function recursively to every member of an array
arsort() Sorts an associative array in descending order, according to the value
asort() Sorts an associative array in ascending order, according to the value
compact() Create array containing variables and their values

count() Returns the number of elements in an array
current() Returns the current element in an array
each() Returns the current key and value pair from an array
end() Sets the internal pointer of an array to its last element
extract() Imports variables into the current symbol table from an array
in_array() Checks if a specified value exists in an array
key() Fetches a key from an array
krsort() Sorts an associative array in descending order, according to the key
ksort() Sorts an associative array in ascending order, according to the key
list() Assigns variables as if they were an array
natcasesort() Sorts an array using a case insensitive "natural order" algorithm
natsort() Sorts an array using a "natural order" algorithm
next() Advance the internal array pointer of an array
pos() Alias of current()
prev() Rewinds the internal array pointer
range() Creates an array containing a range of elements
reset() Sets the internal pointer of an array to its first element
rsort() Sorts an indexed array in descending order
shuffle() Shuffles an array
sizeof() Alias of count()
sort() Sorts an indexed array in ascending order
uasort() Sorts an array by values using a user-defined comparison function
uksort() Sorts an array by keys using a user-defined comparison function
usort() Sorts an array using a user-defined comparison function

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