Multidimensional Array

 $emp=[

[1,"Suman","Adhikari",5000],
[2,"Sabin","Adhikari",4000],
[3,"Neeta","Adhikari",4000],
];

or this can be done as

$mem = array(
    array("1", "Suman Adhikari", "28"),
    array("2", "Mahesh Adhikari", "26"),
    array("3", "Neeta Adhikari", "27")
);

or

<?php

$mem[]=array("1","Suman Adhikari","28");

$mem[]=array("2","Mahesh Adhikari","26");

$mem[]=array("3","Neeta Adhikari","27");

foreach($mem as $v1){

foreach($v1 as $v2){

echo $v2;

}

}

?>

Nested loop

for($row=0;$row<4;$row++){
for($col=0;$col<4;$col++){
echo $emp[$row][$col]. " ";
}
echo "<br>";
}
?>

Nested Foreach loop

$emp=[

[1,"Suman","Adhikari",5000],

[2,"Sabin","Adhikari",4000],

[3,"Neeta","Adhikari",4000],

];

foreach($emp as $v1){

foreach($v1 as $v2){

echo $v2." ";

}

echo "<br>";

}

?>

and this can be used for table as well.

 <?php

$emp=[

[1,"Suman","Adhikari",5000],

[2,"Sabin","Adhikari",4000],

[3,"Neeta","Adhikari",4000],

];

echo "<table>";

foreach($emp as $v1){

echo "<tr>";

foreach($v1 as $v2){

echo "<td>$v2</td>";

}

echo "</tr>";

}

echo "</table>";

?>

Minimal 2x2 Matrix Add & Multiply with User Input

#include <stdio.h>

int a[2][2],b[2][2],c[2][2],i,j,k;

void add(){

  for(i=0;i<2;i++) for(j=0;j<2;j++) c[i][j]=a[i][j]+b[i][j];

  printf("Sum:\n"); 

  for(i=0;i<2;i++,puts("")) for(j=0;j<2;j++) printf("%d ",c[i][j]);

}

void mul(){

  for(i=0;i<2;i++) for(j=0;j<2;j++) for(c[i][j]=k=0;k<2;k++) c[i][j]+=a[i][k]*b[k][j];

  printf("Product:\n");

  for(i=0;i<2;i++,puts("")) for(j=0;j<2;j++) printf("%d ",c[i][j]);

}

int main(){

  printf("Enter 4 for A: ");

  for(i=0;i<2;i++) for(j=0;j<2;j++) scanf("%d",&a[i][j]);

  printf("Enter 4 for B: ");

  for(i=0;i<2;i++) for(j=0;j<2;j++) scanf("%d",&b[i][j]);

  add(); mul();

}