PHP Arrays: A Complete Guide to Using Arrays in PHP

FUNCTION	DESCRIPTION
array()	Creates an array
array_push($array, $value)	Adds one or more elements to the end of an array
array_pop($array)	Removes and returns the last element of an array
array_unshift($array, $value)	Adds one or more elements to the beginning of an array
array_shift($array)	Removes and returns the first element of an array
array_key_exists($key, $array)	Checks if a specified key exists in the array
array_keys($array)	Returns all the keys of an array
array_values($array)	Returns all the values of an array.
array_filter($array, $callback)	Filters elements of an array using a callback function
array_map($callback, $array)	Applies a callback function to each element of an array.
array_reduce($array, $callback)	Reduces an array to a single value using a callback function
in_array($needle, $array)	Checks if a value exists in an array
array_search($needle, $array)	Searches the array for a value and returns its key if found
sort($array)	Sorts an array in ascending order
rsort($array)	Sorts an array in descending order
ksort($array)	Sorts an array by key in ascending order
krsort($array)	Sorts an array by key in descending order
array_chunk($array, $size)	Splits an array into chunks of specified size
array_merge($array1, $array2)	Merges two or more arrays
array_combine($keys, $values)	Creates an array by using one array for keys and another for values
array_slice($array, $offset, $length)	Extracts a portion of an array
array_splice($array, $offset, $length, $replacement)	Removes a portion of an array and replaces it
count($array)	Counts the number of elements in an array
array_reverse($array)	Returns an array with elements in reverse order
array_unique($array)	Removes duplicate values from an array

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