PHP Program to find Matrix Multiplication
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Find Matrix Multiplication
In the following example, we will multiply the two given matrices (two-dimensional arrays).
Example
PHP Compiler
<?php
$arr1 = array(
array(1, 1, 1),
array(1, 1, 1),
array(1, 1, 1),
);
$arr2 = array(
array(2, 2, 2),
array(2, 2, 2),
array(2, 2, 2),
);
$arr3 = array(
array(0, 0, 0),
array(0, 0, 0),
array(0, 0, 0),
);
echo "Matrix A (3 x 3): <br>";
for($i=0; $i<3; $i++)
{
for($j=0; $j<3; $j++)
echo $arr1[$i][$j] . " ";
echo "<br>";
}
echo "<br>Matrix B (3 x 3): <br>";
for($i=0; $i<3; $i++)
{
for($j=0; $j<3; $j++)
echo $arr2[$i][$j] . " ";
echo "<br>";
}
for($i=0; $i<3; $i++)
{
for($j=0; $j<3; $j++)
{
for($k=0; $k<3; $k++)
$arr3[$i][$j] = $arr3[$i][$j] + $arr1[$i][$k] * $arr2[$k][$j];
}
}
echo "<br>Matrix Multiplication (A x B): <br>";
for($i=0; $i<3; $i++)
{
for($j=0; $j<3; $j++)
echo $arr3[$i][$j] . " ";
echo "<br>";
}
?>
Output
Matrix A (3 x 3):
1 1 1
1 1 1
1 1 1
Matrix B (3 x 3):
2 2 2
2 2 2
2 2 2
Matrix Multiplication (A x B):
6 6 6
6 6 6
6 6 6
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