Array collation commonly used in PHP

PHP Common array functions

//  Key names and values of arrays 
array_keys()    Key in array 
array_values()   The values in the array 
in_array()   Determine whether it is in the array 
array_key_exists ()   Whether there is a key
array_flip()       Value and key exchange 
array_search（）  Search the array for a given value , If successful, return the corresponding key name 

// Segmentation and filling of arrays 
array_slice()   Take a segment from the array 
array_splice()   Remove part of the array and replace it with other values 
array_pad ()  	 Fill the array with a value to the specified length 
// Stack   And queues 
array_push()   Element stack 
array_pop()   Element out of stack 
array_shift()  Move the beginning of the array out 
array_unshift()   At the beginning 	 Insert one or more units 

// Array sorting 
array_multisort（） // It can be used to sort multiple arrays at once , Or sort multidimensional arrays according to one or more dimensions .
sort() ksort()  krsort()
asort() asort()

// Array calculation 
array_sum（）  Array sum 
array_merge （）  Array merge 
array_diff （）	 Difference set of array 

array_unique()  Remove duplicate values from the array 
shuffle（）  Array scrambling 
array_rand（）  Select one or more cells randomly from the array 
compact()   Create an array containing keys and values 
array_chunk （）  Divide the array into pairs