Arrays

Array manipulation in Zephir provides a way to use PHP array. An array is an implementation of a hash table.

Declaring Array Variables

Array variables can be declared using the keywords ‘var’ or ‘array’:

var a   = []; // array variable, its type can be changed
array b = []; // array variable, its type cannot be changed across execution

Creating Arrays

An array is created by enclosing its elements in square brackets:

Creating an empty array

let elements = [];

Creating an array with elements

let elements = [1, 3, 4];

Creating an array with elements of different types

let elements = ["first", 2, true];

A multidimensional array

let elements = [[0, 1], [4, 5], [2, 3]];

As PHP, hashes or dictionaries are supported:

Creating a hash with string keys

let elements = ["foo": "bar", "bar": "foo"];

Creating a hash with numeric keys

let elements = [4: "bar", 8: "foo"];

Creating a hash with mixed string and numeric keys

let elements = [4: "bar", "foo": 8];

Updating arrays

Arrays are updated in the same way as PHP, using square brackets:

Updating an array with a string key

let elements["foo"] = "bar";

Updating an array with a numeric key

let elements[0] = "bar";

Updating multi-dimensional array

let elements[0]["foo"] = "bar";
let elements["foo"][0] = "bar";

Appending elements

Elements can be appended at the end of the array as follows:

Append an element to the array

let elements[] = "bar";

Reading elements from arrays

It is possible to read array elements as follows:

Getting an element using the string key foo

let foo = elements["foo"];

Getting an element using the numeric key 0

let foo = elements[0];