change array

1. The concept of arrays An array is a named range that is used to store a series of variable values. Each array element has an associated index (also a keyword) that can be used to access elements. PHP allows you to use numbers or strings evenly

basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Gets the value of the array Array_keys ($arr), gets the key name of the array array_flip ($arr), and the values in the array are exchanged with the key

Basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Get the value of an arrayArray_keys ($arr); Gets the key name of the arrayArray_flip ($arr); the values in the array are exchanged with the key names (if

PHP multi-dimensional array problem, a little difficult! Two arrays are as follows: // Registration information $ array1 = array (0 => array ('day' => '2017-3-7 ', // registration date 'data' => array (0 => array ('uid' => '123 '), 1 => array

Some php array learning notes. There are three types of php arrays: a numeric array with a numeric ID key, and an ID key in an array associated with a value multi-dimensional array containing one or more arrays, there are three types of php arrays:

Array 1: $arr 1=array ([0] = = Array ([TIME] = 8:00[detail] = = Array ([0] = = Array ([Caseid] = 31[casename] = Zhang San) [1 ] = = Array ([Caseid] = 32[casename] = Lee IV) [2] = = Array ([Caseid] = 33[casename] = Harry))) [1] = Ar Ray ([TIME] = 12

The push () function is used to add one or more elements to the current array and return the new array length. The new element will be added to the end of the array in turn.This function belongs to the array object and is supported by all major

# arrayThe Concept of # # # array* Array is an ordered set of values* Each value in the array is called an element* Each element can be a value of any data type* Each element has an index (subscript)* The index of the element starts at 0 and

Adding elements to the arrayThe push () method can add one or more array items to the end of the list:var arr = [];arr.push (' A ', ' B '); Console.log (arr); [' A ', ' B '] The Unshift () method adds one or more array items to the front of the

Concat () methodThe Concat () method is used to concatenate two or more arrays.The method does not alter the existing array, but only returns a copy of the concatenated array.return valueReturns a new array. The array is generated by adding all the