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Re: having trouble using gd imageline in foreach loop [message #172805 is a reply to message #172803]

Thu, 03 March 2011 02:00

Denis McMahon
Messages: 634
Registered: September 2010

Karma:

Senior Member

On 03/03/11 00:08, Lwangaman wrote:

> $direction = "north";

// start, direction is north

> foreach($fibsequence as $fibvalue){

// direction is north, so match this if clause

> if($direction=="north"){ $x2 = $x1; $y2 = bcsub($y1,$fibvalue); $direction="west"; }

// now direction is west, so natch this if clause

> if($direction=="west"){ $x2 = bcsub($x1,$fibvalue); $y2 = $y1; $direction="south"; }

// now direction is south, so match this if clause

> if($direction=="south"){ $x2 = $x1; $y2 = bcadd($y1,$fibvalue); $direction="east"; }

// now direction is east, so match this if clause

> if($direction=="east"){ $x2 = bcadd($x1,$fibvalue); $y2 = $y1; $direction="north"; }

// now direction is north, and we're going to start the loop again

> }

Your if tree should use else if (or switch / case, but that's another
argument):

if ($dir == "n") { /* do the north line, set $dir to w */ }
else if ($dir == "w") { /* do the west line, set $dir to s */ }
else if ($dir == "s") { /* do the south line, set $dir to e */ }
else if ($dir == "e") { /* do the east line, set $dir to n */ }

Rgds

Denis McMahon

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[Message index]

		having trouble using gd imageline in foreach loop By: Lwangaman on Thu, 03 March 2011 00:08
		Re: having trouble using gd imageline in foreach loop By: spambait on Thu, 03 March 2011 01:12
		Re: having trouble using gd imageline in foreach loop By: Denis McMahon on Thu, 03 March 2011 02:00
		Re: having trouble using gd imageline in foreach loop By: Denis McMahon on Thu, 03 March 2011 02:51
		Re: having trouble using gd imageline in foreach loop By: Lwangaman on Thu, 03 March 2011 10:48
		Re: having trouble using gd imageline in foreach loop By: Lwangaman on Sat, 05 March 2011 19:17

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