How to useAssociative Arrays in PHP
For cases where you might need to access elements by a specific key or name, associative arrays can be used. This method is useful when the matrix’s row or column has specific identifiers, making the code more readable and easier to manage.
PHP
<?php $matrix = [ "row1" => [ "col1" => 1, "col2" => 2, "col3" => 3], "row2" => [ "col1" => 4, "col2" => 5, "col3" => 6], "row3" => [ "col1" => 7, "col2" => 8, "col3" => 9] ]; // Display the matrix foreach ( $matrix as $rowName => $row ) { echo $rowName . ": " ; foreach ( $row as $colName => $value ) { echo $colName . "=" . $value . " " ; } echo "\n" ; } ?> |
Output
row1: col1=1 col2=2 col3=3 row2: col1=4 col2=5 col3=6 row3: col1=7 col2=8 col3=9
How to Declare and Initialize 3×3 Matrix in PHP ?
PHP, a widely used scripting language, is primarily known for its web development capabilities. However, it also offers a robust set of features to perform various other programming tasks, including the creation and manipulation of matrices. A matrix is a two-dimensional array consisting of rows and columns, widely used in mathematical computations. This article will guide you through the process of declaring and initializing a 3×3 matrix in PHP, covering all possible approaches.
Table of Content
- Approach 1: Using Indexed Arrays
- Approach 2: Using Associative Arrays
- Approach 3: Dynamically Creating a Matrix
- Approach 4: Using Array Functions