Arrays

Indexed, associative, and multidimensional arrays; adding, removing, and searching; sorting; and the most useful array functions.

Three kinds of array

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Kind	Example	Access
Indexed	$colors = ['red', 'green']	$colors[0]
Associative	$user = ['name' => 'Ada', 'age' => 36]	$user['name']
Multidimensional	$matrix = [[1, 2], [3, 4]]	$matrix[1][0]