# Working with multidimensional array

Hello

I found this great function to calculate permutations

``````function array_combination(\$le, \$set){

\$lk = combination_number(\$le, count(\$set));
\$ret = array_fill(0, \$lk, array_fill(0, \$le, '') );

\$temp = array();
for (\$i = 0 ; \$i < \$le ; \$i++)
\$temp[\$i] = \$i;

\$ret[0] = \$temp;

for (\$i = 1 ; \$i < \$lk ; \$i++){
if (\$temp[\$le-1] != count(\$set)-1){
\$temp[\$le-1]++;
} else {
\$od = -1;
for (\$j = \$le-2 ; \$j >= 0 ; \$j--)
if (\$temp[\$j]+1 != \$temp[\$j+1]){
\$od = \$j;
break;
}
if (\$od == -1)
break;
\$temp[\$od]++;
for (\$j = \$od+1 ; \$j < \$le ; \$j++)
\$temp[\$j] = \$temp[\$od]+\$j-\$od;
}
\$ret[\$i] = \$temp;
}
for (\$i = 0 ; \$i < \$lk ; \$i++)
for (\$j = 0 ; \$j < \$le ; \$j++)
\$ret[\$i][\$j] = \$set[\$ret[\$i][\$j]];

return \$ret;
}

\$mySet = array("1","2","3","4");
print_r(array_combination(3, \$mySet));
``````

The result is shown in a multidimensional array .

Array ( [0] => Array ( [0] => 1 [1] => 2 [2] => 3 ) [1] => Array ( [0] => 1 [1] => 2 [2] => 4 ) [2] => Array ( [0] => 1 [1] => 3 [2] => 4 ) [3] => Array ( [0] => 2 [1] => 3 [2] => 4 ) )

What I have to do to show data in this way ?

1 2 3
1 2 4
1 3 4
2 3 4

I am using this

foreach (\$mySet as \$key =>\$val) {
echo “
\$val”;
}

but it returns only this

1
2
3
4