PENALTY to Arsenal as Eboue is brought down by Fucile.

Wenger is stalking the technical area, he should be smiling, but he's not.

Walcott's pace is causing problems down the right.

Bendtner heads just wide of the near post as he goes in search of a hat-trick.

It's almost like an exhibition game now.

Porto coach Jesualdo Ferreira looks forlorn as he emerges from the visitors' bench.

It's a matter of seeing out time now for Arsenal, who have down the job in some style.

Walcott has a shot deflected away for a corner.

Fifteen minutes to go and the contest is well and truly over.

Arshavin's chipped cross finds Sagna in space, but he blasts his shot well over the top.

Denilson is getting ready to enter the fray.

The home fans are now in good voice with their side in total control.

Wenger is off the bench now and rightly so, his side are cruising into the quarter-finals.

What a piece of play by Nasri, who saved his side at the other end of the pitch just a couple of minutes earlier.

Rodriguez meets a corner from the right and his header is blocked on the line by the alert Nasri and Almunia dives on the loose ball, a let-off for Arsenal.

Arsenal have lost their passing game for the time being.

Helton spills an Arshavin drive, but an offside flag comes to his rescue.

Rodriguez fires in a cross from the left and Falcao's first-time shot tests Almunia, who gathers at the second attempt.

Song's effort from 20 yards is straight at the waiting Helton.

Arsenal have just been a bit sloppy in possession in the last few minutes.

Arsenal gift the ball to Hulk, but his effort from 20 yards out is high and wide.

Raul Meireles fires a shot well over from 30 yards out.

Helton has to fist away a corner from right underneath his own crossbar.

Porto start the second half needing to score to at least force extra-time.

Nasri's low drive is tipped away for a corner by Helton.

Arshavin wins a corner on the left after another fine run.

Three minutes of added time to be played.

The goalkeeper then does well from the resulting corner to keep out a Diaby header at his near post.

Helton gets down to push away a Bendtner effort which looked like it was drifting wide.

Sagna's weak backpass forces Vermaelen into action and he covers for his team-mate's error.

Five minutes to half-time and the Gunners are well on top.

Porto force a couple of corners, but they are both cleared.

Nasri gets clear down the right and his cutback falls to Arshavin, who sidefoots over from 12 yards out when he should have found the net.

Manuel Almunia scuffs a clearance and Hulk tires his luck from 40 yards out, but his left-foot shot drifts well wide.

Arshavin finds an intricate pass through to Bendtner, but this time the big Dane is flagged offside.

Half an hour played and Arsene Wenger could not have wished for more.

Arshavin drifts a free-kick towards the far post from the left and Helton has to make a good catch.

Porto have it all to do, but one goal would force extra-time.

Things just get better for both Arsenal and Bendtner.

Arshavin moves clear down the left and fires in a superb low cross which is eventually cleared.

The game has opened up since Arsenal took the lead, with Porto knowing that they need to attack.

Falcao does superbly to find space 25 yards out, but his attempted shot is blocked by Thomas Vermaelen.

Abou Diaby lifts a shot over the top as he meets Samir Nasri's corner in from the right.

Arsenal look a little nervous after making the breakthrough.

Hulk wins a corner for Porto by putting the pressure on Clichy.

Helton is able to continue, with his side now needing to score to stay in the competition.

Helton receives treatment for a head injury sustained as he tried to avert the danger.

A perfect start for the Gunners and Bendtner makes amends for missing a hatful of chances against Burnley at the weekend.

Sagna drifts over a superb cross from the right and Helton makes a fine save to block Arshavin's header at the far post.

Rosicky threatens down the right, but his cross is cleared.

Bacary Sagna is down with a knock and the game grinds to a halt.

Helton punches away an Arshavin free-kick from the left.

Arshavin's trickery keeps the home side on the ball around the Porto area.

Arsenal respond and Bendtner is close to meeting Gael Clichy's far-post cross from the left.

Porto start brightly and Sol Campbell has to make an early clearing header.