The method and case of implementing matrix transpose operation of two-dimensional array in PHP

This article mainly introduces PHP simple implementation of two-dimensional array of matrix transpose operation, involving PHP for two-dimensional array traversal and operation skills, the need for friends can refer to the next

Specific as follows:

<?php  $arr 1 = Array (array (), array (4,5,6), Array (        6,7,8),        Array (' A ', ' B ', ' C ')      );  Echo ' script home test result:<br><br> ';  Echo ' Matrix transpose before:<br> ';  for ($i =0; $i <count ($arr 1), $i + +) {for    ($j =0; $j <count ($arr 1[$i]), $j + +) {     echo $arr 1[$i] [$j]. ' ';    }    Echo ' <br> ';  }  Echo ' Matrix transpose after:<br> ';  for ($i =0; $i <count ($arr 1); $i + +) {      //Determine number of transpose columns for    ($j =0; $j <count ($arr 1[$i]); $j + +) {  //determine number of transpose lines     $arr 2[$j] [$i] = $arr 1[$i] [$j];   Assign the value of "Row I, Column J" of Matrix 1 to the "line J of Row I"} for Matrix 2    (  $j =0; $j <count ($arr 2); $j + +) {       //iterate over the array 2 for    ($i =0, $i <count ($arr 2[$j]), $i + +) {     echo $arr 2[$j] [$i]. ' ';    }    Echo ' <br> ';  }? >

Run output:

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