Re: for loop limit?

If this is your complete code, then it is obvious the problem. $num is not properly initialized before the for loop is begun. Jose ----- Original Message ----- From: "Theodore" <theodore@mygecko.net> To: "Php-Dev@Lists. Php. Net (E-mail)" <php-dev@lists.php.net> Sent: Friday, May 26, 2000 11:45 PM Subject: [PHP-DEV] for loop limit? > I am writing this crazy script to count something up for math class, and I > can't seem to figure it out. I think that its a limitation of the for > loop... The script is 45 lines total, and is below. If anyone is interested, > I can attach the resulting png that I get.. the ** part is the suspect > area... > > <? > file://declarations and creation > $im = ImageCreateFromPNG("circle.png"); > $black = ImageColorAt($im, 21, 200); > $white = ImageColorAllocate($im, 255, 255, 255); > $grey = ImageColorAllocate($im, 128, 128, 128); > ImageFillToBorder($im, 1, 1, $black, $black); > ImageFillToBorder($im, 200, 200, $black, $grey); > > // point/line section > $r = 200-21; > $deg = 360/$num; > > for($i = 0; $i < $num; $i++) { > $x[$i] = (200 + (int)($r * cos(deg2rad($i*$deg)))); > $y[$i] = (200 - (int)($r * sin(deg2rad($i*$deg)))); > } > > for($i = 0; $i < $num; $i++) { > for($j = 0; $j < $num; $j++) { > ImageLine($im, $x[$i], $y[$i], $x[$j], $y[$j], $black); > } > } > > file://count regions ** part that I think is causing the problem** > $c=0; > $xx=0; > $yy=0; > for ($xx=0; $xx<400; $xx++) > > for ($yy=0; $yy<400; $yy++) { > if(ImageColorAt($im,$xx,$yy)==$grey) { > ImageFillToBorder($im,$xx,$yy,$black,$white); > $c=$c+1; > } > } > } > > file://output and cleanup > ImageString($im, 3, 5, 3, "Circle w/ $num points", $white); > ImageString($im, 3, 5, 15, "Counted $c regions", $white); > header("Content-type: image/png"); > ImagePNG($im); > ImageDestroy($im); > ?> > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > Theodore Baschak - Gecko Internet Services > http://www.gecko-internet.com > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > For additional commands, e-mail: php-dev-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net > >