In some cases we need to implement matrix transposition of array. Today I will bring you an example code of PHP matrix transposition. Let's take a look at it together.
<?php $arr1 = array( array(1,2,3), array(4,5,6), array(6,7,8), array('a','b','c') ); echo '脚本之家测试结果:<br><br>'; echo '矩阵转置前:<br>'; for($i=0;$i<count($arr1);$i++){ for($j=0;$j<count($arr1[$i]);$j++){ echo $arr1[$i][$j].' '; } echo '<br>'; } echo '矩阵转置后:<br>'; for($i=0;$i<count($arr1);$i++){ //确定转置列数 for($j=0;$j<count($arr1[$i]);$j++){ //确定转置行数 $arr2[$j][$i] = $arr1[$i][$j]; //将矩阵1的“第i行第j列”的值 赋给 矩阵2的“第j行第i列” } } for($j=0;$j<count($arr2);$j++){ //遍历数组2 for($i=0;$i<count($arr2[$j]);$i++){ echo $arr2[$j][$i].' '; } echo '<br>'; } ?>
I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to other related articles on the php Chinese website!
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