The following article demonstrates how to Find the Sum of Two Matrices in PHP.

In order to add two matrices in PHP, you need to perform element-wise addition of the two matrices. The following code example demonstrates its implementation.

``````// Define two matrices
\$matrix1 = array(
array(1, 2, 3),
array(4, 5, 6),
array(7, 8, 9)
);

\$matrix2 = array(
array(9, 8, 7),
array(6, 5, 4),
array(3, 2, 1)
);

// Get the dimensions of the matrices
\$rows = count(\$matrix1);
\$cols = count(\$matrix1[0]);

// Initialize a result matrix
\$result = array();
for (\$i = 0; \$i < \$rows; \$i++) {
for (\$j = 0; \$j < \$cols; \$j++) {
\$result[\$i][\$j] = \$matrix1[\$i][\$j] + \$matrix2[\$i][\$j];
}
}

// Print the result matrix
echo "<table>";
foreach (\$result as \$row) {
echo "<tr>";
foreach (\$row as \$value) {
echo "<td>" . \$value . "</td>";
}
echo "</tr>";
}
echo "</table>";
``````

As can be seen in this example, we define two matrices `\$matrix1` and `\$matrix2` with the same dimensions. Then, we use the count() function to fetch the total number of rows and columns respectively. After that, we initialize an empty array `\$result` to store the result matrix.

Then, we iterate over each element of the matrices using two nested loops and add the corresponding elements of `\$matrix1` and `\$matrix2` to get the corresponding element of the result matrix `\$result`.

Finally, we print the result matrix in tabular format using nested loops.

The following output will be generated.

``````10 10 10
10 10 10
10 10 10
``````

Also, note that the values in the result matrix are the sum of the corresponding elements of the input matrices.