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This article mainly introduces examples of PHP two-dimensional array rectangular transposition. Interested friends can refer to it. I hope it will be helpful to everyone.
PHP two-dimensional array rectangular transposition example
<?php //二维数组转置 //定义一个二维数组 $arr =array(array(1,2,3),array(4,5,6)); //定义一个数组来放置转置的数据 $arr1=array(); //转置前遍历 echo "转置前:<br/>"; for($i=0;$i<count($arr);$i++){ for($j=0;$j<count($arr[$i]);$j++){ echo $arr[$i][$j]; } echo "<br/>"; } echo "转置前后:<br/>"; //确定装置后的行数 for($j=0;$j<count($arr[0]);$j++){ $arr1[$j]=array(); } for($i=0;$i<count($arr);$i++){ for($j=0;$j<count($arr[$i]);$j++){ $arr1[$j][$i]= $arr[$i][$j]; //echo $arr; } } //转置后遍历: for($k=0;$k<count($arr1);$k++){ for($l=0;$l<count($arr1[$k]);$l++){ echo $arr1[$k][$l]; } echo "<br/>"; } ?>
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