@temp_array is two dimensional.

If your array is an array of rows, each row containing two columns, it should be something like

@array = (
    [ 1, 2 ],
    [ 3, 4 ],
    [ 2, 5 ],
);
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Now, if you want to find the row that contains the values 3, 4

$temp   = 3;
$temp_1 = 4;
@matching_rows = grep { $_->[0] == $temp && $_->[1] == $temp_1 } @arra
+y;
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With the above @array the resulting array consists of one element, which is an anonymous array containing the values 3 and 4. See perlref and perlreftut for the [ ] constructor.

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

I have the 2D array built from two arrays containg strings:

   @temp_array = (\@arry1, \@arry2);
  my @exists = grep { $_->[0] eq $temp1  && $_->[1] eq $temp2} @temp_a
+rray ;
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Well, that changes things. Sticking to the row/column view, you have arrays of columns. Are those column arrays equal in element number?

my @exists = grep {
    $temp_array[$_]->[0] eq $temp1
              &&
    $temp_array[$_]->[1] eq $temp2
} 0..$#{$temp_array[0]};
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The resulting @exists will contain the indexes into the two anonymous arrays your @temp_array holds where the comparison values are at the same index.

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

 ...
 my @temp_array = ( [qw'a b'], [qw'c d'] );
 my @temp1 = qw'a b';
 my @temp2 = qw'c d';
 
 my @temp_exists = map @$_,
                   grep "@temp1" eq "@{$_->[0]}" && "@temp2" eq "@{$_-
+>[1]}",
                   \@temp_array ;
                   
 print "@$_\n" for @temp_exists
 ...
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