Bifalgorithm post · Computer science one · Multidimensional Arrays

How can two indices be used to set values in a two-dimensional PHP array?

How can two indices be used to set values in a two-dimensional PHP array? (Computer science one · Multidimensional Arrays) — "Alternatively, you can use two in…

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Using two indices with a two-dimensional array
The array is accessed and assigned with $mat[$i][$j].
The outer loop uses $i from 0 through 2.
The inner loop uses $j from 0 through 3.
Nested loops process each row and column position.
Each element receives the value ($i + $j) * 3.
The resulting array contains three rows and four columns.
Row 0 contains 0, 3, 6, and 9.
Row 1 contains 3, 6, 9, and 12.
Row 2 contains 6, 9, 12, and 15.

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How can two indices be used to set values in a two-dimensional PHP array?

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Computer science one

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sam23

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"Alternatively, you can use two indices to get and set values from a 2-dimensional array.\n\nfor($i=0; $i<3; $i++) {\n\nfor($j=0; $j<4; $j++) {\n\n$mat[$i][$j] = ($i+$j)*3;\n\n}\n\n}\n\nwhich results in:\n\nArray (\n\n[0] => Array ( [0] => 0 [1] => 3 [2] => 6 [3] => 9 )\n\n[1] => Array ( [0] => 3 [1] => 6 [2] => 9 [3] => 12 )\n\n[2] => Array ( [0] => 6 [1] => 9 [2] => 12 [3] => 15 )\n\n)"

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