10 lines
371 B
PHP
10 lines
371 B
PHP
function transpose($m) {
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if (count($m) == 0) // special case: empty matrix
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return array();
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else if (count($m) == 1) // special case: row matrix
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return array_chunk($m[0], 1);
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// array_map(NULL, m[0], m[1], ..)
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array_unshift($m, NULL); // the original matrix is not modified because it was passed by value
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return call_user_func_array('array_map', $m);
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}
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